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The Telnyx Email API is a full email platform — not just a send endpoint. It combines transactional sending, bi-directional inboxes, deliverability tooling, and event tracking into a single API built on the same infrastructure that powers Telnyx’s global messaging network.

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What you can build

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Architecture

Telnyx Email runs on KumoMTA, a high-performance mail transfer agent, integrated with the Telnyx API platform. You get:
  • REST API for all operations — sending, inbox management, domain configuration, suppressions, and events
  • Webhooks for real-time delivery and engagement events (queued, sent, delivered, bounced, opened, clicked, unsubscribed)
  • Polling for on-demand event retrieval via GET /email_events
  • Shared infrastructure — no mail server setup, no IP warmup, no MTA configuration

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Getting started

The quickest path to your first send:
  1. Quickstart: Send Your First Email — two-minute send with a shared domain, or full custom domain setup
  2. Sending Email with the Telnyx API — complete send guide with attachments, templates, scheduling, idempotency, tracking, and batch sending
  3. Manage Inboxes — receive, read, reply, forward, and organize email through the API
  4. Webhooks & Events — subscribe to real-time delivery and engagement events

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API surfaces

Email API is in invite-only beta. Access is limited to accounts with the email.beta_access capability enabled. Contact us to request access.