DreamMail for Mac

As of July 2012, Thunderbird has transitioned to a new governance model, with new features being developed by the broader free software and open source community, and security fixes and improvements handled by Mozilla.

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MailMate is an ambitious, powerful email client for OS X. It is designed for and only supports IMAP while still working in full when offline. MailMate has state-of-the-art searching capabilities and correspondingly advanced smart mailboxes.

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Howard is a mail client that notifies you about incoming messages on your personal account. You will receive subtle visual and audio notification whenever someone sends you a message, and you will have the chance to check it on the spot.