Pinnacle
ActiveAPI & SDK for RCS (the next-generation of texting)
What it does
Pinnacle is an API for RCS, the new standard for SMS for app-like text messages.
Its site says now · captured 2026-08-23
Pinnacle — The Messaging API for Developers
One API for RCS, iMessage, MMS, and SMS. Build, test, and scale every channel — send your first message in minutes, not weeks.
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