Open-source email,
built for organisations

cmail is a self-hostable email platform that lets a small team run its own organisational mail on Cloudflare's edge. No agents. No tracking pixels. No vendor lock-in.

Cloudflare-native

Runs on Workers, Pages, D1, and R2. Cheap, fast, globally distributed by default.

SSO from day one

Sign in with Microsoft or Google. No passwords to manage, no separate identity store.

Audit-first

Every message, login, policy change, and admin action is logged for compliance review.

What it is

cmail provides organisational mailboxes for a custom domain — inbound delivery, outbound sending, threading, drafts, archive/spam/trash, and an admin console for users, mailboxes, policy, and audit. Designed for organisations that want to own their email infrastructure without operating a server.

It's released under the MIT licence. Use it, fork it, run it for your team, embed it in something larger — that's the point.

SvelteKit Cloudflare Workers D1 R2 Resend MIT

Get in touch

For deployment enquiries, partnerships, or general questions:

desk@maatara.io