BREAKING
Cloudflare Open-Sources AI Email Client
How Agentic Inbox Handles Mail
1
Receive via Routing
↓
2
Agent SDK hook
↓
3
AI drafts reply
↓
4
Confirm to send
0
tools
email tools
0
Durable Object per mailbox
0
Email Service beta
Stack Behind Agentic Inbox
Frontend & Backend
●
React 19, Router v7, Tailwind
●
Hono, Workers, Durable Objects + SQLite, R2
AI & Auth
●
Agents SDK, Workers AI (Kimi K2.5)
●
Cloudflare Access (JWT), Apache 2.0
Advantages and Caveats
Upsides
●
Self-hosted data sovereignty
●
Low-cost serverless operation
Caveats
●
One Access policy covers all mailboxes
●
Token errors trip up setup
A Reference App to Fork
AI NEWS BLITZ
Cloudflare has released Agentic Inbox, an open-source email client running on Workers.