...I can't believe my power mac (1.2 sonnet) has done such a thing! On the very day I'd cleared my inbox from the server by downloading all my mail to Thunderbird (deletes automatically from server) -& then deleting from T'bird all the mail I didn't want to keep 2 copies of (like, almost everything, of course!) -a couple of hours later Mail crashed & a message came up saying that there was no crashlog (I don't know exactly, my children were watching a movie with VLC & naturally didn't want to stop it for long enough to fetch me at the time). Nothing in the inbox, nothing in the trash... If anyone has any ideas, I'd be glad to hear from you!