Toll Free SMS

Configure Toll-Free SMS & MMS in minutes or seconds including number provisioning and registration. Start sending immediately after. All via our top-rated Messaging API.

Register now in the Portal

Toll-free text message example
Toll Free SMS Features

Features of Toll Free SMS via Telnyx

Toll Free SMS with Telnyx runs on an award-winning, industry-first Verification API.

  • Checkmark

    High throughput toll-free SMS

    Up to 1,200 messages/minute per number. Customers switching from other vendors report a large throughput increase.

  • Checkmark

    Numbers & registration on demand

    Instantly search for, provision and submit Messaging registration requests for branded toll-free numbers in the US.

  • Checkmark

    Voice + SMS enabled

    Seamlessly transition between text and voice on the same number, for a true omnichannel experience. Toll-free numbers also free inbound calling.


Industry leading approval tools & times

Telnyx allows you to complete mandatory Toll-Free Messaging Registration via self-service API or Portal. Register as many numbers as you like in one go!


business days typical approval time

Most Usable Toll-Free Platform

Telnyx regularly wins awards for its ease of use. In Fall 2022 we were again voted "Easiest to Work With" by


ranked Toll-Free SMS API

Always-on support

Most providers put phone support behind a paywall. Telnyx SIP support is available around the clock—for every customer—so your questions never have to wait until Monday.


award-winning support


Get Started

Try the resources below to get started

  • Icon Resources Docs

    Telnyx Toll Free Verification API Reference

    Check out our Developer Docs for details on our industry-first Toll Free Verification. From basic concepts to single and bulk phone number registrations and more.

  • Icon Resources Docs

    Messaging API documentation

    Telnyx’s Messaging API supports SMS messages and MMS from 10DLC, short code, toll free numbers, mobile, alphanumeric and more.

  • Icon Resources Docs

    Messaging API documentation for SMS CRM

    Telnyx’s Messaging API supports SMS and MMS from 10DLC, toll-free numbers, mobile and more.


Toll-free SMS is used to send text messages from toll-free numbers (8XX) to other mobile phones. Toll-free SMS numbers can be customized to your brand, and they also allow you to seamlessly switch between voice and text on the same number.