Michael Kaply has released Mozilla's Thunderbird 2.0.0.9 (Official) for 
OS/2.  Thunderbird 2.x is Mozilla's next generation, state of the art, 
full-featured email, RSS and newsgroup client.  It is OPEN SOURCE, and 
free.  This release is a security and stability.

You can download it here:

http://releases.mozilla.org/pub/mozilla.org/thunderbird/releases/2.0.0.9/contrib/thunderbird-2.0.0.9.en-US.os2.zip

NOTE:  In the unlikely event that you don't already have it, this release 
requires the C runtime DLLs (libc-0.5.1) from Innotek.  Version 0.5.1 
includes an installer.  Available here:

http://download.innotek.de/gccos2/runtime/libc-0.5.1.exe

NOTE:  To have both Firefox, & Thunderbird in use at the same time (or ANY 
other Mozilla app) they *MUST* be at the SAME version level, or a 
mismatched DLL will still be in memory when you attempt to start a second 
Mozilla based program.  The easiest way to get around this limitation, and 
use DIFFERENT version levels of Firefox, Thunderbird, Kompozer, etc., is 
with Rich Walsh's Run! utility.  It is tiny, and VERY easy to set up.  To 
make life even easier, I recommend that you download & use the Internet 
Application Integration utility from Chuck McKinnis, which actually 
contains the Run! utility, and sets it up for you, along with coordinating 
your web browser with your email client for "mailto" links, etc.  You can 
find it here:

http://7cities.net/~mckinnis/code/iai1050.exe

Or, if you'd rather do it yourself, here is the Run! utility:

http://hobbes.nmsu.edu/pub/os2/util/wps/run_060.zip

Thunderbird extensions (add-ons) that add additional functionality are 
available here:

https://addons.mozilla.org/en-US/thunderbird/browse/type:1

Thunderbird themes (skins) are available here:

https://addons.mozilla.org/en-US/thunderbird/browse/type:2

A utility to migrate mail from PMMail to Thunderbird is available here:

http://hobbes.nmsu.edu/pub/os2/apps/internet/mail/reader/pmm_tbird.zip

For more information on the Thunderbird e-mail and newsgroup client:

http://www.mozilla.org/products/thunderbird/

For a list of what's new in this release:

http://www.mozilla.com/thunderbird/releases/

Tips and tricks for Thunderbird can be found here:

http://www.mozilla.org/support/thunderbird/tips

If you have questions, or just want the latest, greatest tips for Firefox, 
Thunderbird, & SeaMonkey, Steve Wendt's excellent "Tips For Warpzilla" page 
can be found here:

http://www.os2bbs.com/os2news/Warpzilla.html

And finally, if you still have questions, or just want to participate in a 
Mozilla for OS/2 discussion forum, the Warpzilla newsgroup can be found here:

news://news.mozilla.org/mozilla.dev.ports.os2

Regards,
Sander