Agentic Inbox

Agentic Inbox is an open-source email client from Cloudflare that runs on your own Cloudflare account. Mail arrives through Cloudflare Email Routing, each mailbox is kept in its own Durable Object with SQLite storage, and attachments are stored in R2. It has a rich text composer, threaded replies, folders, search and attachments. A built-in AI agent sits in a side panel with tools to read, search, draft and send email. It can draft replies to new messages automatically but always waits for confirmation before sending, and each mailbox can have its own system prompt. An MCP server lets tools such as Claude Code or Cursor work with the mailboxes too. It suits developers who want a self-hosted inbox with an AI agent and are comfortable setting up a domain, Email Routing and Cloudflare Access. The code is Apache-2.0 licensed; you only pay for your own Cloudflare usage.