User-Agent: Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.0.9) Gecko/2009040820 Firefox/3.0.9 Build Identifier: version 2.0.0.21 (20090302) nice enterprise feature is signature editor for writing new e-mail (Entourage, evolution have it). It means that mail client should have its own signature base and should provide user with opportunity to select necessary signature for the specific e-mail. So there are 3 design requirements: 1) have in preferences separated editor (edit existing signature; add new; remove selected signature) 2) common design to create new signature (edit front, text size etc) 3) the same as "choose mail priority" window with the list of the existing signatures PS signature list with all existing signatures should be available for all mailboxes under one Thunderbird. Reproducible: Always

A build-in plain-text signature editor (which allows to enter HTML markup) will be available in Thunderbird 3.0; further, there are bug 488469 pending on extending this to a full HTML editor, and bug 73567 on the ability to select from multiple signatures. I'm duping against the latter since you are asking explicitly for selectable signatures.

Thank you very much.