Latest Updates

See the latest revisions, new content and updated references for all developer resources in Developer Center.

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2026

June 2026

• Contact cards and multiple attachments are now supported for MMS message sends, learn more at Attach a Contact Card

May 2026

• New Error Message Catalog page provides examples of error responses, the specific scenarios that can trigger each error, and how to resolve them.

April 2026

• New tutorial Webhook Signature Verification added to learn how to configure verification for your webhook listener endpoint as well as webhook security best practices.

• New tutorial Phone Number Format Guide added to learn how to correctly structure your recipients numbers to always ensure message delivery.

March 2026

• New SMPP Server page has been added.

February 2026

• New Webhooks API Reference page has been added.

• All webhooks-related pages have been updated.

January 2026

• Added getting started steps to Using the Mobile Text Alerts SDKs

• Node.js and Python code samples added to:

  • Get an API Key

  • Send a Message

  • Add a Subscriber

  • Check Delivery Status

2025

December 2025

• New page for Knowledge Base MCP Server under MCP Servers to give your AI tools access to all the available developer and help content.

• Launched new SDKs page to help you learn how to integrate with MTA’s API across different platforms and languages. First SDK subpage added:

  • TypeScript SDK

November 2025

• Launched new AI section, here you can learn how to utilize all of Mobile Text Alerts AI-first features. New pages:

  • How to Use AI with Mobile Text Alerts

  • MCP Servers

  • Actions MCP Server

    • Connect with Claude

October 2025

• Expanded API Reference with newly released API endpoints and refreshed documentation content on over 50 endpoints.

September 2025

• Launched our new API Reference - Complete, detailed documentation for every publicly available endpoint provided by the Mobile Text Alerts API. Developers using Mobile Text Alerts now have an even easier way of referencing any endpoint in our API with full interactivity and the ability to create requests directly within the documentation.

• Introduced new Open in ChatGPT / Claude options for every page on the Developer Center. Simply click on the Copy menu on the top right, and you can send any Developer Center page to your preferred AI assistant and it will analyze and summarize the page for you.

  

August 2025

• Expanded FAQ page with more commonly questions, sourced directly from conversations with our users!

• Improvements to the following pages:

  • Get an API Key

  • Setting up Webhooks

  • Messaging Routes - 10DLC, Toll-Free, Short Code

  • Message Templates

• Added a new Messaging Route Guide - Send an iMessage

July 2025

• Introduced support for llms.txt and llms-full.txt for robust LLM crawling and access.

• Added Markdown support for all documentation pages. Just append .md to a Developer Center URL to get a Markdown version, perfect for LLMs.

• New detailed Adaptive Groups tutorial

• New Messaging Routes Guide - RCS / RBM

• Revamped Custom Subscriber Attributes tutorials, adding distinct tutorials for assigning and managing custom attributes

June 2025

• New Groups Bulk Add/Delete Subscribers tutorial

• Expanded and clarified our Rate Limits page, added sections for endpoint-specific rate limits

• Launched an improved Developer Center Introduction page with a handy registry of links using new visual card elements.

May 2025

• Added a new dedicated Getting Started guide: Check Delivery Status

• New Tutorials:

  • Custom Subscriber Attributes

  • Group Subscribers

• Launched a new Use Cases section with our first use case study: Generate and validate 2FA / MFA codes via SMS

April 2025

• Developer Center launches! A new, comprehensive space for new guides, tutorials and API reference material for Mobile Text Alerts.

• Launched with a full suite of Message Sending Tutorials, Messaging Route Guides and a step-by-step Getting Started flow.