Last year when I reviewed the IMAP keyword tagging scene, I said :

Thunderbird supports IMAP keywords but only allows five of them. This is a known bug but it has been open for more than four year so I’m not holding my breath for it. The amount of comments made to that bug show that user expectations about IMAP keywords are slowly growing.

Eager taggers rejoice : your wishes have been heard… Among the feature list of the just released Thunderbird 2 I read :

Thunderbird 2 allows you to tag messages with descriptors such as “To Do” or “Done” or even create your own tags that are specific to your needs. Tags can be combined with saved searches and mail views to make it easier to organize email.

This is exciting because last year I was pleasantly surprised to see both IMAP servers and MDA providing apparently mature support for IMAP keywords, but I concluded that we were just some client support away from being able to use them.

So the the last missing piece of the IMAP mail tagging puzzle may have been delivered and I shall soon play with it to see if it lives up to its potential.