# The Mailbox API for agents that answer their own email.

A real inbox your code owns. Mail lands as threads; your agent reads and replies over the API. No IMAP, no MIME parsing.

## Claim, compose, and reply in the language you already use.

## SDKs, CLI, and the hosted MCP server all speak the same loop.

Every surface runs the same four calls: claim an address, wait for a webhook, read the new content, and reply. Pick your runtime; the contract is identical.

## Claim, receive, read, reply.

## The whole loop is four calls.

The address is yours from the first call, and on inbox.ai it is permanently reserved to your organization. Nothing polls: step 02 is the wake, over webhook. The examples are plain REST; the SDKs, the CLI, and the hosted MCP server run the same loop.