Documentation

MassAccess API

A unified API for sending messages, managing phone numbers, and receiving delivery status webhooks. For developers and those ready to integrate.

Table of contents

Choose a documentation section

Start with the quick start or go directly to messaging, webhooks, and the complete API reference.

Send messages to clients via Telegram and other messengers using a single API

Receive real-time webhooks about delivery status, phone number changes, and other events

Complete documentation of all methods: parameters, request/response formats, error codes

Send your first message in 5 minutes — step-by-step guide with code examples

Use the dashboard to send messages without writing code.