Compare Constant Contact vs Klaviyo across email, SMS, automation, integrations, and pricing. See where each fits—and when an all-in-one option like Maestra makes sense.
Constant Contact vs Klaviyo vs Maestra (2025): Features, Pricing & Best Alternative
For e-commerce marketers, Constant Contact and Klaviyo stand out by serving specific business requirements and scenarios.
Constant Contact — Best for: Small businesses and beginners who need a simple email marketing solution with some niche extras (like event marketing or social campaigns).
Constant Contact is a long-running email marketing tool focused on ease of use. It offers basic automation, a library of templates, and even unique features like event management and surveys.
However, it’s not specialized for e-commerce — advanced capabilities for SMS, loyalty, or omnichannel campaigns are limited or require add-ons. As your store grows, you may find Constant Contact lacking in sophisticated segmentation and multi-channel integration.
Klaviyo — Best for: Established e-commerce brands (typically SMBs) looking to leverage powerful email and SMS marketing with deep online store integrations and segmentation.
Klaviyo offers robust tools “to help you sell, not just send emails,” including built-in SMS that works in sync with email campaigns. It integrates easily with e-commerce platforms and even lets you sync audiences to Facebook and Instagram for ad targeting, giving you multi-channel reach.
However, Klaviyo lacks certain features like native loyalty programs or on-site content personalization, and its personalization is largely limited to using your existing e-commerce data for targeted emails and texts. Keep in mind that Klaviyo’s pricing climbs quickly as your subscriber list grows, and hands-on support is mainly reserved for higher-tier customers.
Neither Constant Contact nor Klaviyo provides a fully unified solution across all marketing needs. Both will require integrating other tools if you want capabilities beyond their core offerings (such as loyalty rewards or advanced site personalization) and their most dedicated support options tend to be tied to premium plans.
That’s why we included Maestra in this comparison.
Maestra — Best for: Growing mid-market or enterprise e-commerce brands (or ambitious smaller teams) that want a unified marketing platform to drive growth with hyper-personalized promotions across all channels.
Maestra is an all-in-one platform that personalizes customer experiences across email, SMS, website, mobile app, offline, and even paid ads. Instead of managing separate tools for email, SMS, loyalty, etc., Maestra lets you orchestrate everything in one place through unified, real-time customer data. Key features include:
- Real-time Customer Data Platform (CDP) with advanced segmentation
- Omnichannel marketing automation flows (email, SMS, push, ads, etc.)
- Real-time site personalization (dynamic on-site content for each visitor)
- Product recommendations and merchandising tools
- Built-in loyalty and referral programs, plus personalized promotions
- Mobile app and web push notifications to re-engage customers
With white-glove support (every client gets a dedicated success manager) and a focus on mid-size retail needs, Maestra aims to cover all bases in one platform. If that sounds like what you need, book a call with our team!
In this in-depth comparison, we’ll examine how Constant Contact, Klaviyo, and Maestra stack up against each other in key areas for e-commerce marketing success.
Content:
Constant Contact vs Klaviyo vs Maestra: Feature Comparison at a Glance
Category
Constant Contact
Klaviyo
Maestra
Omnichannel Flows
⭐⭐⭐
Supports basic automated campaigns for email (and now SMS) but lacks true cross-channel coordination
Supports basic automated campaigns for email (and now SMS) but lacks true cross-channel coordination
⭐⭐⭐⭐
Effective email and SMS flows with a visual builder; limited to these two channels (recently added basic mobile push)
Effective email and SMS flows with a visual builder; limited to these two channels (recently added basic mobile push)
🏆
⭐⭐⭐⭐⭐
Fully integrated omnichannel automation across email, SMS, push, web personalization, and more, all in real time
⭐⭐⭐⭐⭐
Fully integrated omnichannel automation across email, SMS, push, web personalization, and more, all in real time
Customer Data Management & Segmentation
⭐⭐
Basic contact segmentation using limited attributes and behavior data, lacking a full customer data platform for unified profiles
Basic contact segmentation using limited attributes and behavior data, lacking a full customer data platform for unified profiles
⭐⭐⭐⭐
Robust segmentation leveraging rich e-commerce purchase and browsing data, though updates aren’t fully real-time
Robust segmentation leveraging rich e-commerce purchase and browsing data, though updates aren’t fully real-time
🏆
⭐⭐⭐⭐⭐
Advanced real-time segmentation based on comprehensive online/offline customer data, enabling precise targeting and personalization
⭐⭐⭐⭐⭐
Advanced real-time segmentation based on comprehensive online/offline customer data, enabling precise targeting and personalization
Site Personalization
⭐
Minimal on-site capabilities beyond basic sign-up forms or landing pages; no dynamic content personalization features
Minimal on-site capabilities beyond basic sign-up forms or landing pages; no dynamic content personalization features
⭐
Limited to basic website forms and pop-ups, without any true on-site personalization tools or dynamic content
Limited to basic website forms and pop-ups, without any true on-site personalization tools or dynamic content
🏆
⭐⭐⭐⭐⭐
Dynamic, real-time website content personalization tailored to each visitor’s behavior across the site
⭐⭐⭐⭐⭐
Dynamic, real-time website content personalization tailored to each visitor’s behavior across the site
Email Marketing
⭐⭐⭐
Basic email marketing and automation suitable for simple campaigns; very user-friendly drag-and-drop editor, but lacking advanced features or personalization
Basic email marketing and automation suitable for simple campaigns; very user-friendly drag-and-drop editor, but lacking advanced features or personalization
🏆
⭐⭐⭐⭐
Comprehensive email capabilities with advanced automation, a rich template library, and strong e-commerce integrations for data-driven campaigns
⭐⭐⭐⭐
Comprehensive email capabilities with advanced automation, a rich template library, and strong e-commerce integrations for data-driven campaigns
🏆
⭐⭐⭐⭐⭐
Highly advanced email personalization with dynamic content blocks and high deliverability – enterprise-level features fully unified with customer data
⭐⭐⭐⭐⭐
Highly advanced email personalization with dynamic content blocks and high deliverability – enterprise-level features fully unified with customer data
SMS Marketing
⭐⭐⭐
Basic SMS messaging added to the platform; no two-way texting or MMS, and limited automation/analytics in its SMS tool
Basic SMS messaging added to the platform; no two-way texting or MMS, and limited automation/analytics in its SMS tool
⭐⭐⭐⭐
Strong SMS capabilities integrated with email workflows and segmentation; supports automation but offers limited conversational features
Strong SMS capabilities integrated with email workflows and segmentation; supports automation but offers limited conversational features
🏆
⭐⭐⭐⭐⭐
Fully integrated SMS in omnichannel workflows, supporting sophisticated personalization and intelligent cross-channel coordination (optimal timing, AI triggers)
⭐⭐⭐⭐⭐
Fully integrated SMS in omnichannel workflows, supporting sophisticated personalization and intelligent cross-channel coordination (optimal timing, AI triggers)
Website & Email Product Recommendations
⭐
No native product recommendation engine – any product suggestions must be manually selected or via external tools (no built-in personalization)
No native product recommendation engine – any product suggestions must be manually selected or via external tools (no built-in personalization)
⭐⭐
Basic product recommendation blocks (e.g. in emails) based on simple rules or best-sellers; lacks advanced individualized recommendations
Basic product recommendation blocks (e.g. in emails) based on simple rules or best-sellers; lacks advanced individualized recommendations
🏆
⭐⭐⭐⭐⭐
AI-driven product recommendations that are dynamically personalized to each customer across both website and email, continuously optimized in real time
⭐⭐⭐⭐⭐
AI-driven product recommendations that are dynamically personalized to each customer across both website and email, continuously optimized in real time
Promotions and Referrals
⭐⭐
Limited to sending basic promo codes via email/SMS; no native referral tracking or advanced promotion campaigns (requires external apps)
Limited to sending basic promo codes via email/SMS; no native referral tracking or advanced promotion campaigns (requires external apps)
⭐⭐
Can distribute coupons and discount codes but lacks a built-in referral program – no native referral tracking or incentivization (use of third-party tools)
Can distribute coupons and discount codes but lacks a built-in referral program – no native referral tracking or incentivization (use of third-party tools)
🏆
⭐⭐⭐⭐⭐
Comprehensive promotions and referrals engine, including automated reward tracking, referral link management, and dynamic multi-channel promo campaigns integrated in one platform
⭐⭐⭐⭐⭐
Comprehensive promotions and referrals engine, including automated reward tracking, referral link management, and dynamic multi-channel promo campaigns integrated in one platform
Loyalty Programs
⭐
No built-in loyalty program features; would require an external solution for points or rewards management
No built-in loyalty program features; would require an external solution for points or rewards management
⭐
No native loyalty capabilities – relies entirely on third-party loyalty program integrations for any rewards or VIP tiers
No native loyalty capabilities – relies entirely on third-party loyalty program integrations for any rewards or VIP tiers
🏆
⭐⭐⭐⭐⭐
Fully integrated loyalty program management with points, tiers, and rewards, plus automated personalized engagement for loyal customers
⭐⭐⭐⭐⭐
Fully integrated loyalty program management with points, tiers, and rewards, plus automated personalized engagement for loyal customers
Mobile & Web Push Notifications
⭐
No support for push notifications (no mobile app push and no web browser push functionality)
No support for push notifications (no mobile app push and no web browser push functionality)
⭐⭐⭐
Supports basic mobile app push notifications (recently added), but no support for web browser push notifications
Supports basic mobile app push notifications (recently added), but no support for web browser push notifications
🏆
⭐⭐⭐⭐⭐
Comprehensive push notifications across both mobile app and web browsers, seamlessly integrated into omnichannel customer journeys
⭐⭐⭐⭐⭐
Comprehensive push notifications across both mobile app and web browsers, seamlessly integrated into omnichannel customer journeys
Ad Optimization
⭐⭐
Very limited ad platform integration – mostly requires manual export of contact lists to use in Facebook/Google Ads; no intelligent audience syncing or optimization
Very limited ad platform integration – mostly requires manual export of contact lists to use in Facebook/Google Ads; no intelligent audience syncing or optimization
⭐⭐⭐⭐
Good integration with Facebook and Google Ads for automatically syncing segments to ad audiences, enabling effective retargeting and lookalike campaigns
Good integration with Facebook and Google Ads for automatically syncing segments to ad audiences, enabling effective retargeting and lookalike campaigns
🏆
⭐⭐⭐⭐⭐
Advanced ad optimization with automated audience management and retargeting based on real-time customer behavior, seamlessly integrated into overall marketing strategy
⭐⭐⭐⭐⭐
Advanced ad optimization with automated audience management and retargeting based on real-time customer behavior, seamlessly integrated into overall marketing strategy
Reporting & Attribution
⭐⭐⭐
Standard email campaign reports (opens, clicks, basic conversion counts); lacks multi-channel or advanced attribution analytics for deeper ROI insight.
Standard email campaign reports (opens, clicks, basic conversion counts); lacks multi-channel or advanced attribution analytics for deeper ROI insight.
⭐⭐⭐⭐
Solid campaign analytics with clear revenue attribution for email and SMS campaigns, though it lacks extensive multi-touch or cross-channel attribution capabilities.
Solid campaign analytics with clear revenue attribution for email and SMS campaigns, though it lacks extensive multi-touch or cross-channel attribution capabilities.
🏆
⭐⭐⭐⭐⭐
Comprehensive cross-channel analytics and attribution, including support for control groups and multi-touch attribution models to accurately measure campaign impact.
⭐⭐⭐⭐⭐
Comprehensive cross-channel analytics and attribution, including support for control groups and multi-touch attribution models to accurately measure campaign impact.
Customer Support
⭐⭐⭐⭐
Wide range of support options: phone support (Mon–Sat), live chat (Mon–Fri), an active user community, and extensive how-to resources. However, no dedicated account manager for every customer (personalized support is limited to higher-tier plans or special services).
Wide range of support options: phone support (Mon–Sat), live chat (Mon–Fri), an active user community, and extensive how-to resources. However, no dedicated account manager for every customer (personalized support is limited to higher-tier plans or special services).
⭐⭐⭐
Standard support primarily via self-serve resources (documentation, community forums, email/chat support); one-on-one strategic guidance is usually limited to large enterprise clients.
Standard support primarily via self-serve resources (documentation, community forums, email/chat support); one-on-one strategic guidance is usually limited to large enterprise clients.
🏆
⭐⭐⭐⭐⭐
High-touch “white glove” support for all customers – every client gets a dedicated customer success manager and proactive strategic guidance, in addition to a comprehensive knowledge base.
⭐⭐⭐⭐⭐
High-touch “white glove” support for all customers – every client gets a dedicated customer success manager and proactive strategic guidance, in addition to a comprehensive knowledge base.
Integration Capabilities
⭐⭐⭐⭐⭐
Integrates with thousands of third-party apps (CRM systems, e-commerce platforms, social media, etc.), offering broad connectivity across a marketing stack. (Not all integrations are deeply e-commerce-specific, but the breadth is a strong point.)
Integrates with thousands of third-party apps (CRM systems, e-commerce platforms, social media, etc.), offering broad connectivity across a marketing stack. (Not all integrations are deeply e-commerce-specific, but the breadth is a strong point.)
⭐⭐⭐⭐⭐
Extensive library of 300+ plug-and-play integrations with major e-commerce and marketing platforms, easily enabled without coding.
Extensive library of 300+ plug-and-play integrations with major e-commerce and marketing platforms, easily enabled without coding.
⭐⭐⭐⭐⭐
Highly flexible integrations – offers pre-built connectors for popular tools and supports bespoke integrations, ensuring it can fit into any tech stack (with provider support for custom solutions).
Highly flexible integrations – offers pre-built connectors for popular tools and supports bespoke integrations, ensuring it can fit into any tech stack (with provider support for custom solutions).
Educational Resources
⭐⭐⭐⭐
Strong educational resources for beginners: live training webinars, how-to guides, a detailed knowledge base, and a marketing blog with best practices. Lacks a formal certification program but provides ample content to get users up to speed.
Strong educational resources for beginners: live training webinars, how-to guides, a detailed knowledge base, and a marketing blog with best practices. Lacks a formal certification program but provides ample content to get users up to speed.
⭐⭐⭐⭐⭐
Comprehensive educational ecosystem including the Klaviyo Academy (free video courses and certifications), a robust help center, and a vibrant community forum for peer support.
Comprehensive educational ecosystem including the Klaviyo Academy (free video courses and certifications), a robust help center, and a vibrant community forum for peer support.
🏆
⭐⭐⭐⭐⭐
Personalized onboarding and training: each client receives dedicated training sessions with a success manager, plus an extensive knowledge base and tailored learning resources for ongoing education.
⭐⭐⭐⭐⭐
Personalized onboarding and training: each client receives dedicated training sessions with a success manager, plus an extensive knowledge base and tailored learning resources for ongoing education.
Pricing
Entry-level plans are budget-friendly (around $12/month for ~500 contacts), making it accessible for small organizations. However, some advanced features (like SMS marketing) cost extra, and prices increase significantly as your contact list grows, which can lead to a lower value-for-cost ratio at scale.
Transparent, usage-based pricing that scales with the number of contacts and messages (includes a limited free tier for small businesses). Starting costs are higher than Constant Contact (~$25/month for 500 contacts), and it can become quite expensive as you expand, though you’re paying for more advanced capabilities.
Premium pricing with fixed tiers based on customer profile volume (no free tier). It’s a higher upfront cost reflecting an all-in-one solution and dedicated support service – suitable for brands that can invest in a unified platform to replace multiple tools, but not the cheapest option for smaller budgets.
Constant Contact vs Klaviyo vs Maestra: Omnichannel Flows
Constant Contact
Klaviyo
Maestra
⭐⭐
⭐⭐⭐⭐
⭐⭐⭐⭐⭐
Constant Contact supports email newsletters and some automation, but true omnichannel marketing is outside its scope.
Constant Contact’s flow builder supports email and some SMS
No built-in orchestration across channels beyond email (and a limited SMS add-on). Without a unified customer data platform, it's hard to create cohesive multi-channel campaigns on Constant Contact.
Klaviyo is built for email and SMS integration. Klaviyo flows can include emails and text messages for a more unified customer journey. It integrates with ad platforms (e.g. syncing segments to Facebook) to extend reach.
Klaviyo’s flow builder
However, Klaviyo doesn't natively cover channels like on-site messages or offline touchpoints, and it lacks a built-in CDP to fully connect every channel.
Maestra enables seamless, hyper-personalized flows that connect email, SMS, website pop-ups, push notifications, offline events, and paid ads – all in one journey.
Maestra’s flow example: abandoned card flow with emails, mobile and web pushes, pop-ups, paid ads and loyalty points
With a real-time CDP at its core, Maestra responds to customer behaviors across any channel instantaneously. For example, if a shopper ignores an email, Maestra can follow up with an SMS, show a targeted ad, and trigger a website pop-up — ensuring the message eventually lands on the right channel.
This relentless omnichannel approach means no customer engagement opportunity is missed.
Omnichannel Flows Winner: Maestra
Constant Contact is focused on single-channel campaigns (primarily email), and Klaviyo covers two channels well (email + SMS) but falls short of a true omnichannel experience.
Maestra stands out by letting you design customer journeys that flow across every channel smoothly – for example, catching an abandoned cart shopper via email, SMS, a retargeting ad, or even a push notification in sequence until they convert. Its unified data ensures the customer sees consistent messages without duplication.
For an e-commerce marketer looking to orchestrate campaigns on all fronts from one interface, Maestra offers an unparalleled solution.
Constant Contact vs Klaviyo vs Maestra: Customer Data Management & Segmentation
Constant Contact
Klaviyo
Maestra
⭐⭐
⭐⭐⭐⭐
⭐⭐⭐⭐⭐
Constant Contact offers basic segmentation. Contact management is simple, using tags, lists, or basic filters (e.g. location or email engagement).
Automation lists in Constant Contact
This works for simple campaigns, but Constant Contact does not provide a true customer data platform. Data from e-commerce transactions or offline channels isn't unified automatically. Segmentation options are limited compared to more advanced tools.
Designed with e-commerce data in mind, Klaviyo can segment customers based on purchase history, browsing behavior, predictive analytics (like expected lifetime value), and more. You can even sync these segments to social platforms for targeted ads.
Creating a segment in Klaviyo
However, Klaviyo's "CDP" is essentially your store integration – it doesn't ingest data from every source (like in-store purchases or a separate CRM) out of the box. It's powerful, but focused on online store and email/SMS data.
Maestra has a fully integrated Customer Data Platform built in. Every customer action – email opens, website clicks, purchases (online or offline), even in-store or support interactions – flows into one profile in real time.
Its segmentation capabilities are extremely granular. Marketers can build segments like "High spenders in New York who haven't bought in 90 days" or trigger flows based on live behavior (e.g. viewing a product twice without purchase).
Maestra: user segmentation
Maestra even supports nested segments and dynamic updates (segments that update instantly as customer data changes).
Customer Data Management & Segmentation Winner: Maestra
When it comes to customer data and segmentation, Constant Contact and Klaviyo are a step behind a true CDP platform like Maestra.
Constant Contact's segmentation is sufficient for basic email targeting but lacks depth – it allows grouping contacts by simple attributes or tags.
Klaviyo offers much richer segmentation for e-commerce (leveraging Shopify or other integration data to target by product, purchase recency, etc.) and even includes predictive metrics, which is great for tailored messaging.
Maestra, however, takes data management to another level – unifying all customer data in real time and letting you slice it however you want. This means you can create highly specific audiences (combining online and offline behaviors) and update campaigns on the fly.
Constant Contact vs Klaviyo vs Maestra: Site Personalization
Constant Contact
Klaviyo
Maestra
⭐
⭐⭐
⭐⭐⭐⭐⭐
Constant Contact doesn’t offer built-in website personalization. It provides landing pages and sign-up forms, but you cannot dynamically change your e-commerce site’s content for different visitors. Any on-site promotions or pop-ups would require an external tool.
Landing page templates in Constant Contact
Klaviyo includes basic web forms and pop-ups that you can target to certain segments (for example, showing a signup pop-up to first-time visitors).
Editing a pop-up in Klaviyo
However, it lacks native on-site content personalization beyond those forms. You cannot, for instance, automatically change the homepage banner or product recommendations for different customers using Klaviyo alone. Advanced site personalization would need another tool or custom development.
Maestra's Lead Generation Suite extends beyond standard forms with advanced customization and interactive engagement tools.
The platform offers highly customizable pop-ups and embedded forms with extensive templates and granular control.
Maestra’s pop-up template editing
Enlightened Equipment Achieves 15% Website Conversion Growth with AI-Powered Product Recommendations
Marketers can create multi-step forms that progressively capture information, gamified pop-ups like spin-to-win wheels and scratch-off coupons, AI-powered product recommendations, and product-picking quizzes. These engaging formats significantly boost conversion rates while comprehensive surveys gather feedback and zero-party data.
Smart targeting displays different offers to segments in real-time, while sophisticated frequency control maintains positive user experience by limiting pop-up exposure and prioritizing which forms display when multiple could trigger simultaneously.
Site Personalization Winner: Maestra
Creating personalized on-site experiences is crucial for conversion, and Maestra excels here. It allows your website to become as personalized as your emails – something neither Constant Contact nor Klaviyo can do natively.
Constant Contact doesn’t support on-site personalization at all, and Klaviyo’s capabilities stop at providing pop-ups or forms to specific users (useful, but far from full personalization).
In contrast, Maestra can adjust website content in real time for each user. Whether it’s greeting a VIP customer by name, highlighting products related to their browsing history, or automatically displaying a flash sale banner to a segment that hasn’t purchased recently, Maestra handles it seamlessly. This level of personalization can significantly improve engagement and sales by making each visitor feel the site is speaking directly to them.
Constant Contact vs Klaviyo vs Maestra: Email
Constant Contact
Klaviyo
Maestra
⭐⭐⭐
⭐⭐⭐⭐
⭐⭐⭐⭐⭐
Email is Constant Contact’s bread and butter. It offers a user-friendly drag-and-drop email editor and a large library of templates, making it easy for beginners to create nice-looking newsletters.
Constant Contact’s email composer
It also emphasizes deliverability – Constant Contact is known for good inbox placement and even touts studies showing high delivery rates.
For basic campaigns (newsletters, simple autoresponders), Constant Contact performs well. However, it lacks some advanced email features that e-commerce marketers crave: truly dynamic content, complex automation triggers, or deep personalization beyond inserting a contact's name.
Klaviyo was built for marketing emails that drive sales. It has a robust email automation builder with dozens of pre-built flows (cart abandonment, welcome series, browse abandonment, etc.) tailored to online stores. The editor allows customization and even some product blocks (e.g. pulling in items a customer viewed or related products, if your store is integrated).
Klaviyo’s email composer
Klaviyo also supports A/B testing emails and provides detailed performance analytics for each campaign.
Personalization is strong insofar as you can use any customer or order data in your emails. The only limitation is that without a unified data platform, its email personalization is limited to the data from your e-commerce integration – it can't automatically use data from, say, in-store visits or a separate loyalty app without custom work.
But overall, for email marketing in e-commerce, Klaviyo is one of the top tools.
Maestra offers a proprietary drag-and-drop email composer that produces clean, optimized code (to avoid clipping in Gmail and spam filters). It provides granular control over email campaigns, including trigger-based emails, bulk newsletters, and everything in between. All the expected features are there: A/B testing, scheduling, deliverability tools, etc., plus support for AMP emails and dynamic content blocks.
Maestra’s visual email composer
What really sets Maestra’s email apart is the level of personalization — because Maestra’s emails can utilize any data in its real-time CDP, you can automatically tailor content for each recipient beyond first name. For example, emails can populate with products or offers that are unique to each customer’s browsing history, loyalty status, or past purchases.
Maestra even allows different content or design (images, text, offers) for different segments within the same email send. This kind of hyper-personalization helps drive engagement and conversions to the max.
Email Winner: Maestra
All three platforms will get your promotional emails out, but Maestra and Klaviyo provide more sophisticated capabilities for e-commerce email marketing than Constant Contact.
Constant Contact is reliable for newsletters and simple announcements – it's easy to use and has decent template variety, which is great for small businesses starting out.
Klaviyo takes it up a notch with automation: if someone places an order or abandons a cart on your site, Klaviyo can trigger targeted follow-up emails easily. Klaviyo's deep integration with online stores also means you can include product recommendations or back-in-stock alerts in emails, albeit in a somewhat templated way.
Maestra, on the other hand, combines the ease of a drag-drop editor with the power of a unified data platform. This means every email campaign can be as personalized as a one-on-one conversation – leveraging real-time customer data to populate content. For marketers aiming to maximize email ROI, Maestra's advanced personalization and automation give it the edge.
Constant Contact vs Klaviyo vs Maestra: SMS
Constant Contact
Klaviyo
Maestra
⭐⭐
⭐⭐⭐⭐
⭐⭐⭐⭐⭐
Constant Contact only recently introduced SMS marketing as an add-on (and it’s currently available only in the US). This means SMS is not a core feature but something you can pay extra for on certain plans. There is basic functionality to send mass text messages and simple automated texts.
Message creation in Constant Contact
Additionally, advanced SMS capabilities like two-way messaging, link tracking, or segment-specific texts are either limited or absent.
Klaviyo offers built-in SMS and MMS marketing that works hand-in-hand with its email system. You can create flows that use both email and SMS – for example, sending a text reminder if a customer doesn't open an email.
Klaviyo’s SMS includes features like consent management, personalization using customer data, and A/B testing messages. It also supports segmentation (so you can send texts to, say, VIP customers or those who abandoned a cart).
Klaviyo’s SMS editor
The platform provides reporting on SMS performance and revenue attribution as well. The only gaps are that Klaviyo's SMS is mostly focused on marketing texts; if you need very advanced telecom features or international deliverability, you might need to integrate another provider. Overall, though, for e-commerce, Klaviyo's SMS is powerful and convenient.
In Maestra, SMS is a seamless part of the omnichannel conversation. Because the platform’s flows treat SMS as one touchpoint among many, you can do things like automatically switch to SMS if a customer isn’t responding to email, or follow an SMS with a targeted ad — all coordinated in one workflow.
Maestra's SMS capabilities are enterprise-grade: you can send high-volume bulk campaigns with fast delivery, personalize texts using any customer attributes, and even shorten URLs or track cross-device if a customer clicks from phone to web.
It supports A/B testing for SMS timing or content to optimize engagement.
Essentially, Maestra's SMS isn't siloed – it works in concert with email, push, and other channels as part of a unified strategy.
SMS Winner: Maestra
For SMS marketing, Klaviyo and Maestra are clearly ahead of Constant Contact.
Constant Contact’s SMS add-on is a nice inclusion for basic needs, but it feels bolted-on – and if you’re outside the US, it may not be available at all.
Klaviyo, by contrast, has tightly integrated SMS: you can manage subscribers’ consent, segment audiences, and automate texts alongside emails easily. It’s a strong choice if your focus is on email/SMS together for online store marketing.
Maestra takes it a step further by integrating SMS into broader omnichannel flows. This means the platform can make real-time decisions, like sending a follow-up SMS or mobile push when it’s most likely to convert a customer (for example, after they’ve ignored an email but visited the site again). Additionally, Maestra’s SMS feature set (fast throughput, cross-device tracking, etc.) is built for scale.
If SMS marketing is a critical part of your strategy – especially in combination with other channels – Maestra provides the most flexibility and reach.
Constant Contact vs Klaviyo vs Maestra: Website and Email Product Recommendations
Constant Contact
Klaviyo
Maestra
⭐
⭐⭐⭐
⭐⭐⭐⭐⭐
Constant Contact does not offer built-in product recommendation engines for your website or emails. You can of course manually feature products in an email, but there's no automatic "customers who bought X also like Y" functionality. Any personalized product recommendations on site or in emails would require an external app or manual curation.
Klaviyo can include product recommendation blocks in emails to some extent. Because it integrates with your e-commerce store, Klaviyo can pull in items like best-sellers, trending products, or even use simple algorithms to recommend products based on a customer’s past purchases. This is fairly useful for email personalization.
Adding product recommendations to an email in Klaviyo
However, Klaviyo does not provide on-site product recommendation widgets – you'd need a dedicated solution for that.
And while its email product suggestions are nice, they are not as AI-driven or customizable as some specialized recommendation engines. It's more of a "built-in convenience" than a full recommendation system.
Maestra incorporates AI-powered product recommendations both on your website and in emails. This means Maestra can automatically display products that each customer is most likely to be interested in, using all the data it has (browsing history, similar customers, trending items, etc.). For example, your homepage could show different featured products to a repeat customer versus a new visitor, and your marketing emails can include dynamically generated product grids tailored to each recipient.
Maestra’s product recommendation presets
These recommendation blocks update in real time – if inventory is low or a product's price drops, Maestra can adjust what it recommends accordingly.
Because it's all in one platform, the recommendations a customer sees in an email or RCS can follow them to the site as well, creating a consistent experience.
Website and Email Product Recommendations Winner: Maestra
If you want to leverage product recommendations to boost cross-sells and upsells, Maestra offers the most advanced capability out-of-the-box.
Constant Contact has no native solution here, so you'd be manually picking products to promote or relying on another app.
Klaviyo provides basic personalized product suggestions in emails, which is helpful – for instance, you can include a "Recommended for you" section in a Klaviyo email. But Klaviyo and Constant Contact both lack a native on-site recommendation feature.
Maestra, by integrating AI-driven merchandising tools, ensures that whether a customer is browsing your site or reading your email, they're being shown products tailored to their interests. This can significantly increase average order value and customer engagement, since shoppers are more likely to discover items that resonate with their needs.
Constant Contact vs Klaviyo vs Maestra: Promotions and Referrals
Constant Contact
Klaviyo
Maestra
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Constant Contact does not have a native promotions or referral tracking system for e-commerce.
You can certainly send promo codes in emails or advertise a sale, but managing promotion rules (like automatic discounts, cart-level offers) or running a refer-a-friend program isn't part of the platform. You would need to handle those through your e-commerce platform or a dedicated app.
Klaviyo doesn’t offer a loyalty or referral program out of the box, but it does integrate well with your e-commerce backend to help distribute promotions. For example, Klaviyo can generate unique discount codes (through Shopify or other integrations) and insert them into emails, which is great for one-time use coupons.
Maestra includes robust promotion and referral program features. You can create promotion rules directly in Maestra — for instance, "Free shipping for VIP members this week" or "10% off category X for customers who viewed product Y". These promotions can be highly personalized and triggered by time, behavior, or segment.
Maestra allows you to combine or sequence promotions; for example, offer progressively higher discounts if a customer doesn't convert, or give bonus points for purchases during a specific campaign.
Maestra’s promotions rule engine
It will automatically sync these offers across channels – so an email, an SMS, and a site banner can all consistently reflect the same personalized promotion for a customer.
On the referral side, Maestra has a built-in refer-a-friend program: you can generate referral links for customers and reward them (e.g. with loyalty points or discounts) when their friends make a purchase. All of this is managed in one place, with Maestra tracking who referred whom and applying rewards accordingly.
Promotions and Referrals Winner: Maestra
When it comes to running promotions and referral campaigns, Maestra provides an all-in-one solution, whereas Constant Contact and Klaviyo require external help. This means an e-commerce marketer can easily set up complex campaigns (stackable discounts, tiered offers, timed promotions) and let Maestra handle the heavy lifting of who gets what offer when – all while keeping communications across email, SMS, and web synchronized.
Plus, the built-in referral program in Maestra can be a game-changer if word-of-mouth is important for your growth, saving you from investing in a separate referral tool.
Constant Contact vs Klaviyo vs Maestra: Loyalty Programs
Constant Contact
Klaviyo
Maestra
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Constant Contact has no native loyalty or rewards program features. You cannot manage points, tiers, or rewards in Constant Contact. Any loyalty program would have to be handled by another system, and you could only use Constant Contact to communicate loyalty point balances or promotions via email manually.
Klaviyo also does not include a loyalty program out-of-the-box. It integrates with loyalty apps like Smile.io, LoyaltyLion, or others, meaning you can sync data such as point balance or VIP tier into Klaviyo to use in segmentation or email personalization.
But Klaviyo itself cannot track or issue points and rewards. So while Klaviyo can promote loyalty offers (for instance, emailing a customer that they earned a reward), the actual loyalty system lives elsewhere.
Maestra comes with a full-fledged loyalty program built into the platform. This includes the ability to define point systems, VIP tiers, and rewards without needing a separate loyalty provider.
You can reward customers with points for various actions (purchases, referrals, writing reviews, etc.), and customers can redeem points for discounts or freebies as configured. Maestra’s loyalty features are flexible — you can create custom point names, set point expiry rules, and segment your customers by tier or point balance easily.
Rewards history shown on Urban Armor Gear’s website, powered by Maestra
Because it’s integrated, the loyalty program works hand-in-hand with Maestra’s marketing automation: for example, you can trigger an email or SMS when a customer has enough points for a reward, or show a personalized site banner saying "You have 100 points — only 50 more to get a $10 coupon!" to that customer.
The platform tracks all loyalty transactions and makes it easy to run promotions like "double points weekends" or VIP-only offers as well.
Loyalty Programs Winner: Maestra
Maestra clearly wins on loyalty program capabilities. Neither Constant Contact nor Klaviyo can run a loyalty or rewards program on their own — they simply were not designed for that.
In contrast, Maestra lets you launch a points-and-rewards program as part of your marketing platform. This is a big advantage if customer retention and repeat purchases are a priority, as you can manage and market your loyalty program seamlessly.
Maestra's approach means your loyalty data (points, tiers) is instantly usable for personalization across all channels. For example, you can automatically send a VIP-tier customer a special perk via email, or show a first-time buyer a pop-up encouraging them to join the loyalty program – all from within Maestra.
This level of integration between loyalty and marketing can help drive higher customer lifetime value and engagement, with far less hassle than juggling multiple tools.
Constant Contact vs Klaviyo vs Maestra: Mobile and Web Push Notifications
Constant Contact
Klaviyo
Maestra
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Constant Contact does not support mobile app push or web push notifications. As it's primarily an email marketing service, you won't find features to subscribe users to push notifications or send those real-time browser/app alerts.
Klaviyo has introduced support for mobile push notifications. Using Klaviyo's SDK, you can send push notifications to your app users and even include those as steps in your Klaviyo flows (e.g. an abandoned cart push notification to someone who has your app). This is great for mobile-centric brands.
However, Klaviyo notably does not support web push notifications. So you cannot send push notifications to someone's desktop or mobile browser through Klaviyo.
Maestra supports both mobile app push and web push notifications out-of-the-box.
If you have a mobile app, Maestra can send personalized push alerts to that app via an SDK. For web push, Maestra allows visitors to subscribe to notifications from your website; you can then send them timely browser push messages (for example, "Your order is out for delivery!" or "Price drop on an item in your cart!") even when they're not on your site.
Maestra’s mobile push builder
The key benefit is that Maestra integrates push with the rest of its omnichannel flow builder. This means you can use push notifications as another channel in your automated campaigns – say, a web push that triggers 1 hour after an abandoned cart, followed by an email later, etc.
You get analytics on push engagement and can personalize the content of push messages using Maestra's customer data (e.g., include the product name they left in the cart). By covering both web and mobile push under one roof, Maestra ensures you can reach customers in real time on whatever device or channel makes sense.
Mobile and Web Push Notifications Winner: Maestra
Push notifications can significantly improve real-time engagement, and Maestra gives you the fullest capabilities in this area. Constant Contact doesn't offer push at all, reflecting its primary focus on email. Klaviyo has added mobile app push notifications, which is a boon for brands with apps. However, Klaviyo's omission of web push means you miss out on engaging the segment of customers who might not have your app but would subscribe via their browser.
Maestra covers that gap by offering web push alongside mobile push, fully integrated in the same automation framework as email and SMS. For an e-commerce marketer, this means one less silo and the ability to reach customers instantly with news (sales, back in stock, etc.) whether they're on their phone or desktop.
Constant Contact vs Klaviyo vs Maestra: Ad Optimization
Constant Contact
Klaviyo
Maestra
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Constant Contact lets you create and run social media ads (specifically Facebook and Instagram ads) from within its dashboard. This is a convenient add-on for users who want a one-stop shop to manage email and some advertising. You can design simple ads, choose an audience (e.g., target your email contacts or a lookalike audience), and track ad performance at a high level.
Facebook ad creation in Constant Contact
However, Constant Contact's ad capabilities are fairly basic – it's not an advanced ad optimization platform. There's no sophisticated audience automation or multi-network integration.
Optimization (like automatically adjusting spend or excluding certain audiences) is manual. It's a nice feature for beginners to dabble in ads, but for serious ad performance management, you'll likely use Facebook's tools or a dedicated adtech solution.
Klaviyo doesn't run ads itself, but it optimizes your ads by leveraging customer data. Specifically, Klaviyo integrates with Facebook, Instagram, and even Google in that it can sync your segments to those ad platforms. This means you can automatically create Custom Audiences (or Lookalike Audiences) of your email subscribers, high-value customers, lapsed customers, etc., and use those in your ad campaigns. This significantly improves ad relevance and ROI.
Data syncing settings in Klaviyo
Additionally, Klaviyo's tracking can attribute when a customer saw an ad and later made a purchase (to some extent) and show that in its reporting.
What Klaviyo lacks is the ability to actually manage the ad creative or budget – you still do that on the ad platform.
But as an optimization tool, Klaviyo's rich customer data helps you exclude recent purchasers from ads, retarget interested shoppers, and generally spend smarter by focusing on the right audiences.
Maestra approaches ads as an integral channel in the omnichannel mix. Like Klaviyo, it can sync audiences to ad platforms (Facebook, Google, etc.), using its real-time segments to keep your ad targets fresh. But Maestra goes further: within its Flow Builder, ads can be steps in your automated campaigns, and Maestra uses rules to optimize spend.
For example, Maestra will automatically exclude customers from paid ads the minute they make a purchase, ensuring you don't waste the budget showing ads to someone who just converted. Conversely, it might increase ad frequency for a high-potential segment during a promotion, then dial it back after.
Maestra’s audience automated segmentation for ads works in real-time
Maestra's platform can coordinate messaging so that, say, a customer receives an email, and if they don't open it, they get added to a Facebook ad audience for the same offer – all timed properly.
In short, Maestra treats paid ads as another touchpoint to optimize: it helps ensure your ads reach the right people at the right time and that you're not overspending on people who aren't likely to convert. The result is better ad ROI and a more cohesive marketing strategy.
Ad Optimization Winner: Maestra
For ad optimization, the capabilities differ in focus. Constant Contact offers a simple way to run Facebook/Instagram ads for convenience, but it's not truly optimizing those ads with data – it's more of a basic integration.
Klaviyo doesn't create ads for you, but it shines in using your customer data to make your Facebook/Google ads smarter. Many e-commerce brands see great returns by syncing Klaviyo segments to Facebook Ads; it takes the guesswork out of audience targeting and ensures consistency between email and ad efforts.
Maestra combines that data-driven approach with automation and real-time optimization. By embedding ad steps into its omnichannel flows, Maestra can react instantly – for instance, pausing ads to a customer who just purchased from an email, or launching a retargeting ad sequence when a customer hits a certain trigger. It's like having a smart autopilot for your ads that works alongside your emails, SMS, and on-site messages.
This level of coordination can save ad dollars and improve conversion by always showing the most relevant messaging on each channel. If your goal is to maximize advertising efficiency and integrate ads tightly with the rest of your marketing, Maestra provides the most comprehensive toolset.
Constant Contact vs Klaviyo vs Maestra: Reporting and Attribution
Constant Contact
Klaviyo
Maestra
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Constant Contact offers standard email marketing reports: you can see opens, clicks, bounce rates, and unsubscribe counts for your campaigns. It also provides some high-level stats like overall list growth and engagement over time. If you use its social posting or ad features, you'll get basic performance metrics there too.
Constant Contact’s reporting
However, Constant Contact's reporting is not deeply tied to revenue – unless you manually track, it's hard to attribute sales to a specific email. Constant Contact recently added some e-commerce reporting for certain integrations (like showing total sales from an email campaign if you've integrated your store), but it's relatively simplistic.
There's no multi-touch attribution or funnel analysis in Constant Contact. It's mostly single-channel reporting, useful for quick health checks of your email efforts.
Klaviyo has strong reporting for e-commerce marketing. Every campaign and flow in Klaviyo shows not just opens/clicks, but also how much revenue it generated (based on your store integration, it tracks if recipients placed an order and attributes that sale to the email/SMS). This helps marketers see ROI per campaign.
Fragment of Klaviyo’s business review dashboard
Klaviyo also offers customer-level insights (CLV, average order value, etc.) and even predictive analytics (predicted next order date, churn risk) as part of its analytics suite. You can build custom reports and see trends like revenue over time, list growth, and engagement by segment.
While Klaviyo's attribution is primarily last-touch email/SMS attribution (meaning it gives credit to the last message someone clicked before purchasing), it's very useful for optimizing your flows and campaigns. Klaviyo gives excellent visibility into what drives sales and where to improve, including benchmarks against similar businesses.
Maestra provides a unified reporting and attribution view across all your marketing channels. Because every touchpoint (email, SMS, push, ads, etc.) is managed in one platform, Maestra can attribute conversions across these channels more holistically:
It allows for control groups and holdout tests — for example, you can see how a segment that did not receive a certain campaign performed versus those who did, giving you true incremental lift data:
Maestra’s dashboards can show you, for instance, the combined impact of an omnichannel flow (say, an abandoned cart flow that uses email+SMS+ads) on recovery rate and revenue, rather than looking at each channel in isolation.
Additionally, Maestra's reporting includes deep dive analytics like and segment-level performance (how different customer segments respond to campaigns).
In short, Maestra gives you comprehensive insight into your marketing efforts across channels, helping you identify what's working and where to optimize further.
Reporting and Attribution Winner: Maestra
When comparing reporting, Constant Contact provides the fundamentals but can feel shallow for an e-commerce marketer – you'll get your open rates and maybe see that an email led to some clicks, but tying that to actual sales or looking at cross-channel impact isn't its forte.
Klaviyo steps it up with rich e-commerce oriented analytics: revenue per email, flow performance, customer lifetime metrics, etc., which is immensely valuable for optimizing email and SMS strategies. Marketers can confidently say "This flow brought in $X this month" with Klaviyo, and they can benchmark performance over time or against industry peers.
Maestra goes further by breaking down the silos – its unified approach means you aren't left guessing how different channels interplay. For example, Maestra can show if a combination of an email + push notification led to more conversions than email alone, thanks to its use of control groups and integrated attribution. It also saves you from cobbling together reports from different tools; everything is tracked in one place.
Constant Contact vs Klaviyo vs Maestra: Customer Support
Constant Contact
Klaviyo
Maestra
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Constant Contact has long been known for its strong customer support for small businesses. They offer live chat, phone support, a comprehensive knowledge base, and community forums. In fact, phone support during business hours is a big plus that not all modern platforms provide. They also have professional services (like marketing advisors) you can pay for if you need hands-on help.
The only caveat is that support quality and availability can vary; some users report that live chat or phone lines aren't 24/7 and may have wait times.
Overall, though, Constant Contact provides plenty of resources and real humans to assist, which is fitting given its focus on less tech-savvy users.
Klaviyo provides support through live chat and email, and they maintain a detailed online help center and active community forum. For most users on lower tiers, support is primarily via email or chat during working hours, and response times can sometimes be slow if volume is high.
Klaviyo does have account managers and priority support, but those are typically reserved for higher-paying customers or enterprise accounts. They also offer Klaviyo Academy courses and lots of how-to guides to help users self-serve.
In general, Klaviyo's support is knowledgeable, especially for e-commerce questions, but smaller customers might not get as hands-on guidance. It's a more self-service approach unless you're a big client.
Maestra provides white-glove support to all users. Every Maestra client, regardless of size, is assigned a dedicated Customer Success Manager from day one. This means you have a go-to person who will help with onboarding, strategy, and any issues that arise.
Maestra’s support team will actually help you with migration (moving from your old tools), setting up your flows and integrations, and even offer bi-weekly strategy calls to optimize your marketing.
In addition to the one-on-one service, Maestra offers live chat with extremely fast response times (often under 5 minutes) and of course a knowledge base for reference.
The key differentiator is that Maestra becomes an extension of your team – their experts will proactively monitor your campaigns and suggest improvements. This level of support is usually only seen in high-end enterprise software, but Maestra includes it for all customers by default.
Customer Support Winner: Maestra
When it comes to supporting users, Maestra sets itself apart.
Constant Contact does a commendable job for small business users – the availability of phone support and the variety of support channels earn it a high score in this category, as many users appreciate being able to talk to a real person when they need help.
Klaviyo's support is solid in knowledge but somewhat tiered: unless you're on a premium plan, you might not get very personalized service, though the documentation and community often fill the gaps.
Maestra, however, treats every client like a VIP. Having a dedicated success manager and proactive support means even a mid-sized brand with a small marketing team can get expert guidance on complex campaigns.
This can accelerate your learning curve and execution speed significantly. For an e-commerce marketer who values hands-on help — whether it’s technical integration or campaign strategy — Maestra’s support model is extremely attractive. It ensures you’re not left alone to figure things out; instead, you have a partner in optimizing your marketing efforts.
Constant Contact vs Klaviyo vs Maestra: Integration Capabilities
Constant Contact
Klaviyo
Maestra
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Constant Contact boasts a very large number of integrations with other systems. By one count, it has over 7,000 integrations listed in its directory, though this figure includes many Zapier connectors (indirect integrations).
In practice, Constant Contact directly integrates with popular e-commerce platforms (Shopify, WooCommerce, etc.), social media (for simple ad or post features), and CRM/event tools. If something isn’t a direct integration, chances are you can connect via Zapier or PieSync.
This breadth is a strength: Constant Contact can fit into most existing tech stacks without much hassle. However, not all integrations are deep — some might just pass contacts one way. It covers the bases for a generalist tool.
Klaviyo has 300 native integrations, including all major e-commerce platforms (Shopify, Magento, BigCommerce, WooCommerce, etc.), payment systems, review apps, help desks, and more. Its integration with Shopify is especially seamless and bi-directional (syncing customer, order, and product data). Klaviyo also integrates with advertising platforms (Facebook, Google) for audience sync, as discussed, and has an open API for custom integrations.
Klaviyo’s integrations are very relevant to e-commerce and marketing — essentially anything a data-driven online store might use (loyalty apps, subscription apps, etc.). Moreover, Klaviyo has a strong partner network; many third-party tools build integrations to Klaviyo because of its popularity in e-commerce.
This means if you’re using a modern SaaS tool for your store, odds are it can connect to Klaviyo. In summary, Klaviyo gets top marks for integrating into an e-commerce marketing stack.
Maestra is an all-in-one platform, which intentionally reduces the number of external integrations you might need (since it covers email, SMS, loyalty, etc., internally). That said, it still integrates with key external systems easily. Maestra provides native integrations for e-commerce platforms (like Shopify, Magento, etc.), connecting your product catalog and order data seamlessly. It also hooks into ad platforms (Facebook Ads, Google Ads) to push audiences, and web analytics tools to import/export data.
If you have an existing CRM or another database, Maestra’s API and integration toolkit allow two-way data sync without fuss — and Maestra does not charge extra for API usage or integrations.
Additionally, as part of the onboarding, Maestra’s team will assist in any custom integration or data migration you need.
Additionally, as part of the onboarding, Maestra’s team will assist in any custom integration or data migration you need.
The goal is that Maestra becomes your central hub; it’s open enough to pull in data from anywhere (offline POS systems, other apps via webhooks, etc.) and push data out to wherever needed. Since Maestra is newer, its integration library is not "thousands of apps" on paper, but it covers the essential categories and is flexible to connect to others. Integration capability is not a roadblock with Maestra — if you have data somewhere, they’ll help get it connected.
Integration Capabilities Winner: Tie — Klaviyo and Maestra
All three platforms recognize the importance of playing nice with other tools, but their approaches differ. Constant Contact has a massive list of possible integrations, reflecting its broad user base and longevity — thanks to Zapier and similar, you can link CC to pretty much anything, though sometimes in a rudimentary way.
Klaviyo is laser-focused on e-commerce integrations and does that exceedingly well; it covers all the crucial retail and marketing apps (from review systems to subscription apps to customer support platforms), often with rich data sync.
Maestra, being a unified platform, tries to eliminate the need for many integrations (since a lot of functionality is built-in). Still, it provides direct integrations for the core systems every brand needs — your online store, ad networks, analytics, etc. — and has an open, no-fee API to plug anything else in.
A noteworthy point is Maestra’s approach to integration support: their team actively helps integrate and migrate your data as part of the service, which can save a lot of headaches. In summary, Constant Contact and Klaviyo are both highly integrable (with Klaviyo having an edge for modern e-com stacks), and Maestra ensures that integration won’t be an issue even as it consolidates your stack into one platform.
Constant Contact vs Klaviyo vs Maestra: Educational Resources
Constant Contact
Klaviyo
Maestra
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Constant Contact provides a wealth of educational content aimed at small business marketers. Their online knowledge base is extensive, covering how-to guides for every feature. They also regularly publish webinars, tutorials, and even offer local seminars or virtual events on email marketing best practices.
For users who want more personalized training, Constant Contact has marketing consultants and a partner network (though those may cost extra). The platform's in-app help is quite user-friendly, with tooltips and setup wizards guiding new users.
Essentially, if you're new to digital marketing, Constant Contact tries to not only give you the tools but also teach you the basics of campaigns, list building, etc. This focus on education is one of the reasons many non-experts start with Constant Contact.
Klaviyo offers a robust set of resources, tailored to data-driven e-commerce marketing. Their Klaviyo Help Center is full of step-by-step articles. They also have Klaviyo Academy videos/courses, which can train you on everything from segmentation strategies to building effective flows.
For those who like community learning, the Klaviyo community forum is active, and the company often holds live training sessions or workshops (especially around big shopping seasons) to help customers succeed. Additionally, many third-party agencies and blogs produce Klaviyo content (guides, best practices), so the ecosystem of knowledge is large.
Maestra's educational approach combines traditional resources with hands-on guidance. On the self-serve side, Maestra has a detailed knowledge base and blog articles (case studies, marketing strategy posts, etc.) that help clients understand not just how to use Maestra, but how to excel at omnichannel marketing (since it's a newer paradigm for many). They also provide documentation for any integration or advanced feature one might use.
However, what truly sets Maestra's "education" apart is the one-on-one training baked into their support. Your dedicated CSM doesn't just troubleshoot – they actively coach and strategize with your team, ensuring you learn the platform and best practices. Early in onboarding, they hold training sessions for your staff and share workflow templates and playbooks.
As a result, even if Maestra's public knowledge base is still growing, you effectively have an expert tutor available. This means faster learning curves and more confidence using the platform's advanced features. For marketers who don't have time to sift through articles, this personalized education is invaluable.
Educational Resources Winner: Tie
In terms of educational resources and learning support, all three platforms do a commendable job, but they cater to different audiences.
Constant Contact focuses on foundational marketing education – perfect if you're just starting out or need guidance on general strategy (like "what should I send in my newsletter?"). Its tutorials and webinars are beginner-friendly and plentiful.
Klaviyo offers deeper tactical and technical learning materials for the data-savvy marketer – if you want to become a segmentation ninja or learn to build multi-step automations, Klaviyo's resources (and community) will get you there. It's a bit more advanced, reflecting Klaviyo's user base of growth-focused e-commerce brands.
Maestra provides a mix: as a newer all-in-one platform, it invests in educating users on omnichannel best practices through content, but it also directly mentors clients via its CSMs. This high-touch approach means that instead of hunting for answers, you often have them delivered – a very appealing scenario for a busy marketing team.
Essentially, with Maestra you get a guided learning experience. If you prefer self-paced learning, there's documentation and blogs; if you prefer someone to just show you how to do it, Maestra will do that too.
Constant Contact vs Klaviyo vs Maestra: Pricing
Constant Contact
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Maestra
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Constant Contact uses a traditional tiered pricing model. It has (as of 2025) a Lite plan ($12/month for up to 500 contacts), a Standard plan ($35/month for 500 contacts), and a Premium plan (~$80/month for 500 contacts), with prices increasing as your list grows.
Each tier unlocks more features – for example, Automation and A/B testing come in at Standard, and Premium offers the full feature set (like advanced automation, content segmentation, etc.).
The pricing is attractive for small lists, and there’s even a 60-day free trial (but no perpetual free tier). However, costs can rise significantly as contacts increase, and things like the SMS add-on cost extra. Also, Lite plan’s feature limitations (e.g., only 1 user, very basic automation) make it less useful for e-commerce needs.
In short, Constant Contact is budget-friendly to start and you can choose a plan based on your needs, but if you require multiple advanced features and have a large list, the price advantage may diminish compared to more powerful tools.
Klaviyo's pricing is straightforward but can become pricey. There are essentially two product offerings: Email and Email & SMS (combined). You pay based on the number of contacts in your database (for email) and the number of SMS messages sent (for SMS). Notably, Klaviyo offers a free tier for very small accounts (up to 250 contacts and 500 email sends, for example), which is nice for trying it out.
Once you exceed that, the cost scales with your list size. For instance, in 2025, ~5,000 contacts on email might cost around $100+/month (and more if you add SMS). By 100k contacts, you could be looking at over $1,000/month.
The upside is you get all features (no feature gating as in Constant Contact) on any paid plan – it's just volume-based. The downside is quickly rising costs as you grow; many brands find Klaviyo to be one of their biggest SaaS expenses when their list is large. Also, if you want to use SMS, that adds to the bill (SMS has its own sending costs).
There are no long-term contracts required (month-to-month billing), but no significant discounts unless you negotiate at higher tiers.
Overall, Klaviyo is worth the cost for the revenue it can drive with its advanced capabilities, but it's certainly not the cheapest option. Brands need to be prepared for the investment.
Maestra operates on a customized pricing model tailored to each client's needs, generally based on the number of customer profiles (contacts) you have. As a guideline, Maestra's pricing starts at $2,300 per month for a package covering 1,000 up to 80,000 customer profiles.
While this figure is a significant jump from the entry costs of other tools, keep in mind that Maestra's price includes everything – all modules (email, SMS, push, loyalty, etc.), unlimited emails sends, and even the dedicated support service. SMS messages are charged at a low per-message rate (around $0.0045 each), which is quite competitive.
Importantly, Maestra does not nickel-and-dime on things like API calls, additional data, or number of users – there are no hidden fees. The pricing is transparent and all-inclusive, so you won't be surprised by overage costs for using more features.
Maestra is clearly an investment. However, if you consider that it can replace several point solutions (email service, SMS service, loyalty platform, site personalization tool, etc.), the consolidated cost can be justified. Every plan comes with the full white-glove service and you can cancel anytime without penalty.
In essence, Maestra's pricing is value-driven: higher monthly cost but potentially lower total cost (and headache) than paying for 5-6 separate tools to achieve the same functionality.
Constant Contact vs Klaviyo vs Maestra: Final Verdict
Choosing the right marketing platform depends on your business stage and goals. Here’s a quick recap to help e-commerce marketers make the decision:
Constant Contact is a reliable choice for small businesses or those just starting with email marketing. It’s user-friendly and affordable at entry levels, covering the basics of email and some simple multi-channel touches (like social posts or event invites). If you don’t need advanced e-commerce features and want a straightforward way to send newsletters and occasional promos, Constant Contact can serve you well.
However, growing online brands will likely outgrow its capabilities. As your need for sophisticated automation, personalization, and e-commerce integrations grows, you might find Constant Contact limiting (and you may end up bolting on extra tools, which adds cost and complexity).
Think of Constant Contact as the solid foundation for basic online marketing – great to get started, but not the one-tool solution for scaling an omnichannel retail brand.
Klaviyo has become the go-to for many e-commerce marketers for good reason – it strikes a strong balance between power and ease in the email/SMS realm. If your focus is on driving online sales through targeted emails and texts, and you want deep insight into your customers’ shopping behaviors, Klaviyo excels.
It will integrate tightly with your store, help you automate revenue-driving flows, and give you analytics to refine your strategy. Klaviyo is ideal for brands that are climbing from small to mid-sized and even beyond, provided you’re okay integrating a few other tools for things like loyalty or reviews. It’s not all-in-one, but it plays extremely well as the central hub for messaging while connecting to other specialized apps.
Budget-wise, anticipate that Klaviyo will be a significant line item as you scale – it’s an investment that usually pays off in ROI, but you need to be ready for the cost ramp-up.
Maestra, the newcomer in our trio, is the comprehensive solution for those who want everything under one roof. For a rapidly scaling, mid-market or larger e-commerce brand with an established customer base and marketing team, Maestra offers the ability to consolidate and elevate your marketing efforts.
The platform’s breadth – covering omnichannel automation, single-customer-view data, email, SMS, site personalization, loyalty, referrals, push, and more – means you’re not juggling disparate systems or losing track of the customer journey. The advantage you get is a hyper-personalized customer experience across every touchpoint, which can significantly boost engagement and conversion rates.
Additionally, Maestra’s white-glove support ensures that even complex strategies are executed smoothly, which is a huge plus if you don’t have a large in-house marketing ops team.
The trade-off is the higher upfront cost; Maestra is best suited for businesses that are ready to leverage its full capabilities (and have the marketing volume to justify it). If you are at that stage, Maestra can be a game-changer – it’s essentially like hiring an entire marketing tech stack and an expert team to run it, all in one. For those who want to drive growth through truly personalized, data-driven marketing across all channels, Maestra is hard to beat.
Final recommendation:
If you’re a small e-commerce operation with simple needs and a tight budget, start with Constant Contact (or a similar basic platform) to get the fundamentals in place.
As you grow into an e-commerce mid-market player and need more sophisticated targeting and automation, Klaviyo will likely be a natural step up – it’s a proven driver of online sales with its advanced email/SMS and analytics.
But when your strategy matures to where customer experience and personalization across every channel becomes the key differentiator (often as you reach a larger scale or face tougher competition), that’s where Maestra shines.
Maestra is built for the marketers who don’t want to be limited by their tools – it’s for creating the kind of integrated, tailored customer journeys that drive loyalty and maximize lifetime value. In the end, all three platforms have their merits; it’s about aligning the tool with your current needs and future ambitions.
For e-commerce marketers aiming for the pinnacle of unified, personalized marketing, Maestra offers the most complete package, whereas Klaviyo and Constant Contact can be stepping stones on the journey to that level of sophistication. Book a demo today and see how Maestra can take your marketing to the next level!