[MacBerry]

Chris,

If you know in advance that you'll be deleting the email once the action is done, would it work to file it in a "To Trash" folder. I.e. file immediately as Brian suggests, putting only those you won't be keeping in a pending folder you can empty out every now and then? I guess te downside is that you'd still have to remember which messages you can and which messages you can't delete when you come to purge that folder.

The "correct" solution I guess is to follow the link from the action to the message when the action is done, then click on delete in the message toolbar, then return to OF to mark the task done.

It'd be nice if it were all a bit more elegant, but I'm not sure how it could work.