EXHIBIT B

SMS and MMS costs

Last updated: 04/18/2025

* Carrier Pass Through Fees not Included. Carrier Pass Through Fees and Services not included to Exhibit B will be rebilled with an additional five percent (5%) surcharge to cover payment gateway charges and other related Provider costs. Maestra is in every instance entitled to pass on price increase by email to Customer, whether arising from an obligation pursuant to legislation and regulations, from an increase in the purchase price of messages or from rates changes effected by Cellular Network Operators. Changes shall apply immediately unless it is specified differently on the rate list. Maestra shall make reasonable efforts to notify the Customer in advance of such price change. In the event that Customer does not agree with the proposed changes, this part of the Agreement can be terminated in accordance with this Agreement.

RCS Messaging (USA)

* RCS Carrier Pass Through Fees not Included. RCS Carrier Pass Through Fees and Services not included in Exhibit B will be rebilled with an additional five percent (5%) surcharge to cover payment gateway charges and other related Provider costs. Maestra is entitled, in all instances, to pass on any applicable price increases to Customer by email notification, whether such increases arise from changes in legislation or regulations, from carrier-imposed adjustments to message delivery pricing, or from ecosystem requirements introduced by Google, mobile network operators, or other third-party providers. In addition to carrier fees, certain third-party charges may apply in connection with RCS messaging, including, without limitation: (a) Aegis Vetting & Certification Fees (e.g., brand verification, visual asset approval, appeals); and (b) Content Violation Penalties (e.g., fines imposed by carriers such as T-Mobile for sending messages that violate content policies or applicable law). Maestra shall make reasonable efforts to notify customers in advance of such changes. These fees are standard in the industry and subject to modification by third parties without prior notice. In the event that Customer does not agree with the proposed change