Mozilla Thunderbird 3.1.2
Mozilla Thunberbird is a full-featured email application that has everything you need to manage your emails and news feeds.
It supports, just like Firefox does, the installation of plugins, dictionaries and themes which makes it even better. Here is a list of its features.
The only thing missing is that the layout similar to Microsoft Outlook using three vertical panes doesn’t display well the mail information, when that layout in Outlook is awesome. Hopefully, some extension will enhance this view in the future.
You can download a portable version released by PortableApps.com.





