i assume for this to work remotely ok the imap idle is a must. also how is it supposed to work on the receiving site ? There has to be some "Folder" where those messages are stored and the imap idle should listen to that folder or else my inbox will be huge mess and mess with my regular mail client.

also was there any tests how long does it take for delivery, because the message could hop around and could be scanned, added addotional headers or mess with those there.