Makes sense, thanks. > The clients doing SMTP themselves allows them to communicate sending failures to the user. How would you do that for an email just sitti

Makes sense, thanks. > The clients doing SMTP themselves allows them to communicate sending failures to the user. How would you do that for an email just sitting in an IMAP folder? I would introduce a folder for logs. Also make the server move messages it succesfully sent from Outbox to Sent folder. By the way, I wish the whole email system would have been extended to make it possible to attach (not in the way we attach files, not integrated in the message, only visible to the owner/admin of the mail box where the message is stored, not communicated to other servers/clients) comments to email messages so I would be able to attach my thoughts&tags to a message I received and the server could attach diagnostic data about delivery details.