For the complete documentation index, see llms.txt. This page is also available as Markdown.
Overview
Inbound Email lets you receive incoming emails, read them via API, and get webhook notifications when new messages arrive. Mailtrap accepts messages on your behalf, parses them into structured JSON.
Inbound email is most commonly used for:
Internal system automations – Receive and process/categorize emails (support tickets, invoices, notifications) without running a mail server
Admin panels – Display incoming emails in your own web app or admin panel
AI agents – Give your AI agent its own email address to receive and process messages
Agent frameworks – You're building with OpenClaw, LangChain, CrewAI, or other agent frameworks and need email as a tool via MCP
The UI, as well as support for custom receiving domains, is coming soon.
How it works
First, you need to create an inbox via the API and get an address like app1@inbound-mailtrap.io (for Mailtrap-hosted inbound inboxes). From there you have two options: configure a webhook to get notified on every new message, or poll the Messages API on your own schedule. Or both.
