Mozilla Thunderbird 1.5 for OS/2 & eCS has been released.  As was the 
case with Firefox, Thunderbird 1.5 is an immense improvement over it's 
1.0.x predecessor.  Aside from improvements to stability, the 
following is a partial listing of features that differentiate the new 
Thunderbird.

New features since Thunderbird 1.0.x include:

* Spell check as you type.
* Automated update to streamline product upgrades.
* Built in phishing detector to help protect users against email scams.
* Podcasting and other RSS Improvements.
* Deleting attachments from messages.
* Integration with server side spam filtering.
* Reply and forward actions for message filters.
* Kerberos Authentication.
* Auto save as draft for mail composition.
* Support for saved search folders that can search across multiple
accounts. * Support for message threads for single folder saved search
folders. * Improvements to product usability including redesigned options
UI, search and filter UI, and SMTP server management. * Filters for Global
Inbox.
* Many security enhancements

You can download it here:

http://ftp.mozilla.org/pub/mozilla.org/thunderbird/releases/1.5/contrib/thunderbird-1.5.en-US.os2.zip

NOTE:  This release requires C runtime DLLs  from Innotek.  The latest 
version is 0.5.1, which includes an installer.  Available here:

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

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

https://addons.update.mozilla.org/extensions/?application=thunderbird

Thunderbird themes (skins) are available here:

https://addons.update.mozilla.org/themes/?application=thunderbird

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.org/products/thunderbird/releases/1.5.html

Tips and tricks for Thunderbird can be found here:

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

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/netscape.public.mozilla.os2

Regards,
Sander Nyman