Hey YC! We’re Sean and Ivan from Pinnacle.

Today, we’re launching our API to send and receive RCS (Next-Gen SMS) text messages natively on user’s devices. We’re also launching an SDK for Python (`pip install rcs`). If you’re currently sending SMS, you should probably be using Pinnacle.

Here’s a quick example of how we used our API to sell our Founder Mode hats (certified by Brian himself 😉)

The problem

Short: SMS sucks.
Long: SMS messages have high friction from sending a message to checking out a customer. Interactivity is very limiting with SMS.

The solution

Short: RCS rocks.
Long: RCS messages reduce high friction for customers to buy products with a single tap and add interactivity through buttons, card carousels, and actions.

Why now

This hasn't been possible until now. Apple rolled out RCS this week on iOS 18. Carrier adoption has been fully supported on all Android devices just this year. Carrier adoption for iOS completes in a couple months. We segment by device so you can adopt RCS incrementally.

Our asks

• Share - tell your friends & colleagues about Pinnacle
• YC Companies - reach out to us (founders@trypinnacle.app) to join our private beta. You'll also get a free Founder Mode hat, designed by us, 1000 messages / mo free, and our 24/7 #FounderMode support.