I just downloaded the
Thunderbird 2.0.0.0 rc2 to take a look on whats ahead.
One really neat feature I was craving for is the
Advanced Folder View
, i.e. in the folder pane you can now select which folders you want to see:
- all
- favorite
- Unread
- Recent (i.e. Most resently used)
This comes quite close to what I was used from Microsoft Outlook with the favorite's pane to the left. Granted, I haven't been using Outlook for the last 4 years now, but I still was missing the favorite folder pane from it.
Having all the unread folders in one list is quite handy when you have multiple accounts, news-groups and RSS feeds to look at.
Another cool feature is the promotion of labels from earlier versions to
Tags.

With labels you couldn't really do a lot... but now you can create any custom tag and assign any number of tags to a message. Of course you can search and filter by tags...
TB2 also supports
Google Mail, just give your (real) name and gmail account – and that's it. Sadly, it's just
pop3, so any additional info in gmail, e.g. tags are not visible to TB2...
While setting up gmail I noticed that the
New Mail Notification alert/popup has now a lot more information... comes with Sender and Subject.
You can now
Find text within the message just like in Firefox..

Also it seems to run quite stable... no problem encountered so far.
On the downside, none of my
Extensions work with TB2... I guess most of them just don't declare TB2 support instead of having a real technically issue.