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Your mailbox as MCP tools

A native Model Context Protocol (MCP) server. Point an MCP client at one endpoint and your agent gets email as callable tools.

API reference ↗
MCP endpoint

The MCP endpoint and a mailbox key.

How it works

The server speaks the streamable-HTTP transport. Authentication is a mailbox API key, the same scoped key as the REST API, so a client gets only the role you grant. Connect a client and the mailbox's actions appear as tools.

Connect a client

Point your client at the MCP endpoint and pass a mailbox API key as a Bearer token.

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What your agent can do

The mailbox surfaces its actions as tools: messages.send, messages.list, messages.search, threads.reply, and the rest of the mailbox surface. The full tool set is published from the live server in the API reference ↗.

Scoped by design

Each key is scoped to a single mailbox with one role and an optional expiry, so a connected client can do only what you allow. Suppression and limits are isolated per mailbox.