http://wiki.mozilla.org/Thunderbird:QA_TestDay:2009-01-08 has tips and
starting points. And help is available on IRC in #bugday should you need
advice. See http://wiki.mozilla.org/Thunderbird:Testing for other ways
to contribute to Thunderbird's progress. See also
http://quality.mozilla.org/events/2009/jan/08/thunderbird-bugday-thursday-108-smack-trunk-bugs
Please join us this Thursday in #bugday!
wsmwk
** Expect Beta 2 release candidate testing in February. To participate
and receive notification of Thunderbird testing events, subscribe to
thunderbird-testers mailing list at
https://mail.mozilla.org/listinfo/thunderbird-testers