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B2B

Pinnacle

API & SDK for RCS (the next-generation of texting)

YC-S24B2B -> Engineering, Product and DesignEarly
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What Pinnacle does

Pinnacle is an API for RCS, the new standard for SMS for app-like text messages.

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Company facts compiled from public sources and last refreshed 9 September 2026. Details change; treat the company’s own site as the authority.

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