Yeah, I kinda thought it may have been out of the realm of possibility (since no one has thought of doing it already). It was just more of a 'wishlist' thing I thought I'd ask for after returning to the game after a ~5 year break from the game and having years of old irrelevant mail from guild leaders on all my characters.
But thanks for the /clear_mailbox tip. It'll make it alot easier to delete said mail items without having to go through the 'Open > Delete, Open > Delete, Open> Delete, etc etc' process.
