What is Agentic Inbox?
Agentic Inbox is a self-hosted email client with an AI agent, running entirely on Cloudflare Workers. It lets you send, receive and manage email through a web interface powered by your own Cloudflare account. The repository is published under the cloudflare organisation on GitHub and is licensed under Apache 2.0.
Incoming mail arrives through Cloudflare Email Routing, and each mailbox runs in its own Durable Object with SQLite storage and R2 for attachments. The email client has a rich text composer, reply and forward threading, folders, search and attachments. A side panel hosts an AI agent with nine email tools for reading, searching, drafting and sending. The agent can automatically draft replies to new email, but always requires explicit confirmation before sending. Custom system prompts can be set per mailbox.
The stack is React 19 with Hono on the backend, and the agent is built on the Cloudflare Agents SDK with Workers AI. Setup requires a Cloudflare account with a domain, Email Routing and Email Service enabled, Workers AI, and Cloudflare Access for deployed environments. The app also exposes an MCP server at /mcp so tools such as Claude Code and Cursor can operate on mailboxes.
Agentic Inbox screenshots
Explore the interface. Open a screenshot to view it at full size.
Source: official Agentic Inbox project page.
Key capabilities
- A web email client with a rich text composer, reply and forward threading, folders, search and attachments.
- Per-mailbox isolation using Durable Objects with SQLite storage and R2 for attachments.
- A side-panel AI agent with 9 email tools for reading, searching, drafting and sending.
- Auto-drafted replies to inbound mail that always need your confirmation before sending.
- Custom system prompts per mailbox and persistent chat history.
- An MCP server at /mcp for external AI tools.
Where Agentic Inbox fits
Agentic Inbox fits domain email workflows that combine a browser inbox with AI-assisted correspondence. It can also provide email operations to external AI clients through its MCP server. Deployment requires a Cloudflare account with a domain, Email Routing for receiving, Email Service for sending, Workers AI and Cloudflare Access. The deployment button provisions infrastructure but does not complete the required access and email configuration.
Before shared deployment, operators must verify the Cloudflare Access policy and its Worker secrets. Any user admitted by that policy can access every mailbox, including through MCP. Separate mailbox storage does not provide per-mailbox authorization, so the application should only be shared within a group trusted to access all of its mailboxes.
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