I was browsing around Wikipedia when I chanced upon this in the Mozilla Thunderbird article:
As of March 14, 2005, security site Secunia counts 1 unpatched security flaws not yet fixed for Mozilla Thunderbird 1.x, compared to 6 unpatched security flaws for Microsoft Outlook Express 6, 2 unpatched security flaws for Eudora 6.x and 0 unpatched security flaws for Ximian Evolution 1.4.x.
Is Thunderbird safe enough for general purpose use, especially in corporations? You be the judge.

Anonymous | 17-Mar-05 at 4:56 pm | Permalink
Interesting that this is ‘As of March 13, 2005′ since as of March 14, 2005 ‘1 out of 3 Secunia advisories, is marked as “Unpatched” in the Secunia database.’
skywalker | 17-Mar-05 at 5:00 pm | Permalink
Post edited as necessary.
jm.one | 17-Mar-05 at 9:39 pm | Permalink
not that i would use it, but Outlook Express is not the same as Outlook, which is mouch more widely used in a corporate enviroment….
skywalker | 17-Mar-05 at 11:36 pm | Permalink
I suppose this would be a comparison of free email programs… Corporate use of these programs would vary anyway.
Jean-Marc Gillet | 18-Mar-05 at 6:45 pm | Permalink
https://bugzilla.mozilla.org/show_bug.cgi?id=286451 [major] was fixed yesterday.
Tobias | 19-Mar-05 at 2:05 am | Permalink
Well, I’d like to use Thunderbird at work, too. But we’ve got that MS Outlook collaboration infrastructure, and TB just hasn’t enough features. But it’s great at home. I like the RSS reader!