Mozilla foundation that had already released the first milestone of their browser (Firefox 1.0) last month, delivers today its mail client first milestone in the form of Thunderbird 1.0,

Thunderbird 1.0 is Mozilla’s next generation e-mail client. Thunderbird makes emailing safer, faster, and easier than ever before with the industry’s best implementations of features such as intelligent spam filters, saved search folders, builtin RSS support, privacy protection and much more.

Major highlights for this version are:
* Saved Search Folders
* Message Grouping
* Global Inbox
* Comprehensive Data Migration
* RSS Integration
* Improved Privacy Controls
* Improved Quick Search

Head over to GetThunderbird.com to get it.