Open source mail

There are several open-source email clients and servers available. Here are a few examples:

Email Clients:

  1. Thunderbird: A popular open-source email client developed by Mozilla.
  2. Claws Mail: A lightweight, feature-rich email client with a focus on security and customization.
  3. Sylpheed: A fast, lightweight email client with a simple interface.
  4. Geary: A modern, open-source email client for Linux and Windows.
  5. Mutt: A text-based email client with a strong focus on customization and keyboard shortcuts.

Email Servers:

  1. Postfix: A popular open-source mail transfer agent (MTA) that can be used to route and deliver email.
  2. Sendmail: Another popular open-source MTA that can be used to route and deliver email.
  3. Exim: A powerful, feature-rich open-source MTA that can be used to route and deliver email.
  4. OpenSMTPD: A modern, open-source MTA that is designed to be secure and easy to use.
  5. Mail-in-a-Box: A self-contained, open-source email server that includes a web interface and support for multiple protocols.

Other Open-Source Email Solutions:

  1. Roundcube: A web-based email client that can be used with a variety of email servers and protocols.
  2. Horde: A web-based email client that includes a calendar, contacts, and other features.
  3. Zimbra: An open-source email and collaboration platform that includes a web interface and support for multiple protocols.
  4. OpenWebMail: A web-based email client that can be used with a variety of email servers and protocols.
  5. Citadel: A groupware system that includes email, calendar, and contacts, as well as support for multiple protocols.

These are just a few examples of the many open-source email clients and servers available. It's worth noting that while open-source software can be a great option for many users, it may not always be the best choice for everyone.