Mozilla Thunderbird is an award-winning email application from Mozilla.
Read More about Mozilla Thunderbird.....

SquirrelMail is a standards-based webmail package written in PHP.
Read More about SquirrelMail.....

Evolution provides integrated mail, addressbook and calendaring functionality to users of the GNOME desktop.
Read More about Evolution.....

Roundcube webmail is a browser-based multilingual IMAP client with an application-like user interface.
Read More about Roundcube.....

Claws Mail is an email client (and news reader), based on GTK+, featuring Quick response, Graceful, and sophisticated interface, Easy configuration, intuitive operation, Abundant features, Extensibility, Robustness and stability.
Read More about Claws Mail.....