Hello, I am a customer since version 2.7, then 3, then 4 ... and I find it totally unacceptable that the version 4 (final) has a huge bug with "thunderbird-IMAP" which led to the irretrievable loss of 170 professional email! http://img25.imageshack.us/img25/5707/thunderbirdl.png What to do now ... I lost very important messages! Stephane Sorry for my bad english EDIT: I have (more) lost messages now ... is unacceptable, I go back to version 3, and when my license will be out I would see in competitor ... loss of professional posts is now asking me enormous problems. THANK YOU No reply to my message to "support"!