Our Download of the Day today is Thunderbird 5.0.

Thunderbird is a great email client from the same people who brought you the Firefox browser.

Thunderbird gives you IMAP/POP support, a built-in RSS reader, support for HTML mail, powerful quick search, saved search folders, advanced message filtering, message grouping, labels, return receipts, smart address book LDAP address completion, import tools, and the ability to manage multiple e-mail and newsgroup accounts.

• Tabbed email

• An Archive feature similar to the one in GMail

• Lightning fast search

• Smart folders

The latest version includes the following changes:

Changes in Version 5.0

* More responsive and faster to start up and use

* Thunderbird is based on the new Mozilla Gecko 5 engine

* New Add-ons Manager

* Revised account creation wizard to improve email setup

* New Troubleshooting Information page

* Tabs can now be reordered and dragged to different windows

* Attachment sizes now displayed along with attachments

* Plugins can now be loaded in RSS feeds by default

* There are several theme fixes for Windows Vista and Windows 7

* Support for Mac 32/64 bit Universal builds (Thunderbird will no longer support PowerPC on Mac)

* Over 390 platform fixes that improve speed, performance, stability and security