Postbox is an e-mail client built off of Mozilla’s Thunderbird code. It includes a little bit of a facelift and a lot of cool new features. I’m currently transitioning from Thunderbird to Outlook, personally, but after going a few rounds with Postbox (which is in version 1.0 beta 12) it seems that if you’re using Thunderbird you might as well be using Postbox.
You can see the various features highlighted in the full article over at Freewaregenius. Postbox has a lot of new options from a received messages editor, a To-Do list, Google Maps integration, to dedicated received attachments and images tabs.
Postbox seems very cool, but determining if it’s the right e-mail client for you, I’ll leave up to you. Read my full review of Postbox over at Freewaregenius.