Open source · MIT licensed

Organisational email, under your control.

Give your organisation real email: personal inboxes for everyone, shared addresses for teams, and clear control over who can access what. It runs in your own Cloudflare account, on your own domain — not a service you rent from us.

Deploy your own Security & assurance View the source

MIT licensed Your domain, your data Sign in with Google or Microsoft

Product tour

See it before you set it up

Real cmail screens, filled with sample data. Personal mail, shared team mail, and admin tools all live in one place — with no shared passwords and a clear record of who did what.

cmail shared Community Enquiries inbox showing mailbox navigation, unread messages, importance, attachments, search, and bulk actions — **Personal and shared mailboxes in one workspace** Switch between your own inbox and any shared team address. Folders, search, and unread counts work the same in both.

cmail management overview showing account, mailbox, message, deployment readiness, and directory privacy summaries — **Management overview** One place to check accounts, mail flow, policy, and recent activity across your organisation.

cmail shared mailbox administration showing named delegates and Read, Send as, and Full access permissions — **Shared mailbox delegation** Create an address like support@yourcompany.com, then decide exactly what each person can do with it.

cmail signature settings showing a personal signature layered above a locked organisation signature — **Personal and organisation signatures** Everyone can set their own signature. Managers can lock a standard one and add a company-wide signature underneath.

cmail policy management showing a current organisation IT policy and acknowledgement progress — **IT policy sign-off** Publish your IT policy and require people to accept it before they can use mail. cmail keeps a record of who agreed, and when.

Capabilities

What you get

The features that matter for running organisational email well.

Shared team addresses

Set up addresses like support@ or sales@, and choose exactly who can read, send as, or fully manage each one.

Sign in with Google or Microsoft

People use the account they already have. No extra password for you to store or for someone else to steal.

Sends and receives real mail

Mail flows through Cloudflare, or Postmark if you prefer — not a sandbox or a demo.

Find out what happened

When someone asks “did my email arrive?”, search delivery history and admin activity in one place.

Signatures and policy, handled

Require people to accept your IT policy before they get mail access. Layer personal and company signatures automatically.

Catches obvious scams

Flags suspicious links, look-alike senders, and messages from people you’ve never heard from before.

Your team, organised

Set up teams, roles, and reporting lines. Directory details stay internal by default.

Works like an app

Install cmail on a phone or desktop, and get notified when new mail arrives.

Shared mailboxes

A team address without a shared password

Everyone signs in with their own Google or Microsoft account — nobody shares a password. A manager creates the shared address and decides exactly what each person can do with it. Afterwards, it’s clear who did what.

Folders, read status, and sent mail are shared with everyone who has access. Drafts stay private until sent. (cmail borrows the term “Exchange-style” from Microsoft Exchange for these permission levels — it’s an independent, Cloudflare-native product, not a Microsoft Exchange server.)

ReadOpen and read messages, and mark them read or unread.

Send asEverything in Read, plus writing and replying from the shared address.

Full accessEverything in Send as, plus moving, starring, archiving, and deleting messages.

Deploy

Bring your own domain and providers

Clone the repo, create your Cloudflare database and storage bucket, set up sign-in, and store your secrets — then verify mail flow before you go live.

cmail is pre-1.0 software. Work through the deployment and security checklists, set up backups, and test with real accounts before going live.

Read the deployment guide

# clone, configure, and validate
git clone https://github.com/Rob142857/cmail.git
cd cmail
pnpm install
pnpm setup
pnpm validate