6 open-source Email (Personal) vendors.

Open-source software for Email (Personal) that you can self-host, with auditable source code — regardless of the developer's headquarters.

• CaliopenSelf-hosted / open source

  Open-source unified secure messaging platform combining email and encrypted messaging, relocated from France to Luxembourg to avoid French surveillance law.

  Luxembourg

• DisrootEU sovereign

  Dutch nonprofit collective offering privacy-focused, donation-funded email and services.

  Netherlands

• mailcow (self-host)Self-hosted / open source

  Self-hosted mailserver stack; EU-operated

  Germany

• RiseupSelf-hosted / open source

  US volunteer-run nonprofit (Riseup Labs) providing free secure email and online services for activists.

  United States

• Roundcube (self-host)Self-hosted / open source

  Webmail client; self-hostable

  European Union (distributed) · owner in Germany

• TutaEU sovereign

  German open-source encrypted email service

  Germany