I have a puzzle I can't seem to get to the bottom of any wondered if anyone has come across this? I am using Mac Mail as client in Lion with Gmail as my email provider (IMAP). All the boxes/folders appear to be working OK with the exception of Trash. Now as with all the others I expand the Gmail IMAP folders in the bar on the left and I have a label marked as Trash. I highlight the Trash label (Mac lists them as folders) then go to the Mac Mail toolbar > Mailbox > use this Mailbox for and select Trash. No problem, Trash label disappears from Gmail and a Trash icon then appears in my Mac Mail folder list. If I delete an email the email goes into Trash without issue and it's still there when I shut Mail down. However, when I restart Mail the mail is still in Trash until the server syncs with Mac Mail and at this point the email disappears. My question is why is it disappearing? I know the mail is still there in the "All Mail" folder but I can't understand where the command to move the mail is coming from. I have gone through all my mail settings both on the Mac and on Gmail yet I can't find any command or rule that should be emptying Trash in this way. Anyone?