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Self-hosted Gmail alternatives on Cloudflare

5 open-source, self-hosted Gmail alternatives you can deploy to your own Cloudflare account. No subscription, no seat limits, and your data stays in your account.

  1. 05

    Cloud Mail

    Run a multi-user mail service on your own domain with attachments and an admin panel.

    maillab/cloud-mail

    Instead ofGmail
    AICrD1KVR2
    14.7kMIT5 weeks ago
    Install with CLI
  2. 25

    Agentic Inbox

    Web email client for your domain with an AI agent that searches mail and drafts replies.

    cloudflare/agentic-inbox

    Instead ofGmail
    R2DOAIEm
    8.3kApache-2.06 months ago
    Deploy to Cloudflare
  3. 38

    Quickinbox

    Webmail for your own domain with threads, attachments, multiple users and an MCP server.

    DivinPrince/quickinbox

    Instead ofGmail
    D1R2AIEm
    420MIT6 days ago
    Deploy to Cloudflare
  4. 60

    OmniMail

    Multi-domain webmail for individuals and small teams, with a browser extension and Android app.

    mibgb65-cloud/OmniMail

    Instead ofGmail
    D1R2QWfAICr
    248MIT12 days ago
    Deploy to Cloudflare
  5. 133

    Email Explorer

    Web email client for sending and receiving mail on your own domain, with users and an admin panel.

    G4brym/email-explorer

    Instead ofGmail
    R2DOEm
    165MIT4 months ago
    Deploy to Cloudflare

Gmail alternative questions

What is the best open-source Gmail alternative on Cloudflare?

Cloud Mail ranks highest right now, with 14.7k GitHub stars and its last commit 5 weeks ago. Run a multi-user mail service on your own domain with attachments and an admin panel.

Can I self-host a Gmail alternative for free?

Yes. These apps are open source, and they run on Cloudflare Workers in your own account. Small setups usually fit in Cloudflare’s free plan.

How do I install one?

Open the app and press Deploy to Cloudflare, or follow the install steps in its README. Cloudflare creates the databases and storage it needs in your account.