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Pinnacle

Pinnacle

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

Operating headquarters
San Francisco, CA, US🇺🇸
Accelerator
Y Combinator logoY CombinatorS24
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Library

Pinnacle - Library

pinnacle.sh·Crawled Oct 1, 2026·

Topics

Publication type

Content origin
Row density

Blog

8 pages
  1. Add an Audience and Send a Blast in Two Lines of Code/blog/audience-blast-two-lines

    Create an audience from a list of phone numbers and fire an RCS blast — two API calls, one minute of code.

  2. Best Business Messaging Platforms & SMS APIs in 2026: Twilio, Sinch, Pinnacle, and More Compared/blog/best-business-messaging-platforms-2026-comprehensive-comparison

    We compared the 10 best business messaging platforms and SMS APIs for 2026 — Twilio, Sinch, Bird, Vonage, Plivo, Telnyx, Bandwidth, AWS, Infobip, and Attentive — against Pinnacle across pricing, RCS support, compliance, analytics, and developer experience. Here's what we found.

  3. Blog/blog
  4. Building an SMS Pre-Send Filter: The Architecture That Actually Works/blog/sms-pre-send-filter

    If you're building your own SMS pre-send filter, the instinct is to compile a regex of bad words. Don't. Here's the three-tier block/flag/allow architecture, the normalization stack, and the code that actually keeps messages flowing.

Pricing

2 pages
  1. Plans/plans

    Pinnacle plans starting at $50/mo. Pay-as-you-go RCS, SMS, and MMS with no sales call.

  2. Pricing/pricing

    One API for SMS, MMS, RCS, and iMessage. Transparent per-message rates starting at $0.015 with a price-match guarantee, plus expedited carrier approvals on every registration.

Comparison

4 pages
  1. Pinnacle vs. AWS for Business Messaging: SNS, End User Messaging, and What You Actually Need/blog/pinnacle-vs-amazon-business-messaging-comparison

    AWS has three messaging services — SNS, End User Messaging, and the remnants of Pinpoint. Together they can send SMS, MMS, and RCS. But stitching them into a business messaging product is a different story. Here's a complete comparison against Pinnacle.

  2. Pinnacle vs. Infobip: Enterprise Scale Without the Enterprise Friction/blog/pinnacle-vs-infobip-business-messaging-comparison

    Infobip is a Gartner Leader with 190+ countries, 800+ carrier connections, and 15+ channels. It's also opaque, complex, and enterprise-gated. If you need messaging that ships in minutes — not months — here's how Pinnacle compares.

  3. Pinnacle vs. Klaviyo: When You Need a Messaging API, Not a Marketing Platform/blog/pinnacle-vs-klaviyo-business-messaging-comparison

    Klaviyo is a powerful e-commerce CRM that happens to send SMS. Pinnacle is a messaging API that happens to be easy enough for marketers to use. If you need transactional messaging, OTPs, developer control, 10DLC, or RCS beyond marketing campaigns — here's why Pinnacle is the better fit.

  4. Pinnacle vs. Sinch: Three Products Stitched Together vs. One That Just Works/blog/pinnacle-vs-sinch-business-messaging-comparison

    Sinch is a Gartner Leader with deep carrier relationships — and three separate product lines from three acquisitions. If you want messaging that works as one platform, not three, here's how Pinnacle compares.

Contact

1 page
  1. Contact/contact

    Talk to a Pinnacle engineer about your messaging stack. We'll walk through your use case and get you live on RCS, iMessage, MMS, or SMS.

Homepage

1 page
  1. Homepage/

    One API for RCS, iMessage, MMS, and SMS. Build, test, and scale every channel — send your first message in minutes, not weeks.

Privacy

1 page
  1. Privacy/privacy

    Privacy policy for Pinnacle's RCS and SMS messaging API platform. Learn how we collect, use, and protect your data.

Terms & Conditions

1 page
  1. Terms/terms

    Terms of service for Pinnacle's RCS and SMS messaging API platform. Review our terms, conditions, and policies.