Telnyx SMS on Vercel

The Telnyx integration on the Vercel Marketplace (slug telnyx, product telnyx/phone-number, shown as SMS Phone Number (US)) gives a Vercel project a US phone number that can send and receive SMS. Installing it creates a Telnyx account for the Vercel team. Billing is prepaid credit bought in Vercel.

Full guide for humans: https://telnyx-vercel-integration.vercel.app/docs Working example app: https://github.com/team-telnyx/telnyx-vercel-sms-template

Know this before you start

• US only. US local numbers, and they can only text US numbers. No voice, MMS or toll-free.
• Prepaid. Credit is bought in Vercel, from $10. The number is $1 a month; texts and 10DLC fees come out of the same balance.
• A person has to do two things. Accept the terms and pay for credit in Vercel, then pass a one-time identity check (government photo ID and a selfie). You cannot do either for them. Tell the user when it is their turn and wait.
• Texting US mobile phones needs 10DLC registration, which takes about a week. Until then, sends to ordinary US mobiles fail. Receiving texts and texting other Telnyx numbers work straight away.
• One Telnyx account per team email. If the Vercel team's email address already has a Telnyx account, the install can't continue. Linking an existing Telnyx account isn't supported.

1. Find and install with the Vercel CLI

Use a current CLI (npm i -g vercel@latest), signed in (vercel login), and run everything from the app's directory.