eM Client -
eM Client is a full featured e-mail client with a modern and easy to use interface. eM Client also offers calendar, tasks, contacts, notes and chat.
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Apple Mail -
There’s big news attached. The best way to manage email on a Mac, according to Apple.
Microsoft Outlook Express -
Outlook Express is a desktop mail app that was included with pre-Windows 7 versions of Internet Explorer on Windows XP . Outlook Express is no longer available or supported by Microsoft: it has been replaced...
Thunderbird -
Cross-platform email client supporting multiple identities, chat, and strong filtering. Extend functionality with add-ons like RSS/Atom feed readers and PGP support.