Using IMAPd to send emails?

[Gregg Berkholtz]

This topic doesn't seem to be covered in the docs, FAQ, Wiki, mailing
list searches, or Google - so please forgive me if it's a FAQ...

Many environments are seeing a steady increase in attachment sizes,
and hence are encountering growing issues associated with uploading
multi-megabyte emails twice (once as an SMTP message, and another as an
IMAP upload to the user's sent folder). 

Some of my environments have users growing impatient with the time it
takes to upload sent emails, when "...opening emails/attachments take
half as long as sending them...".  We're seeking ways to minimize sent
message upload times for users not only on dialup, and low-upload-speed
broadband, but also for users on high upload/download speed links.

One possibility being considered is eliminating the need for SMTP
uploads from the client. Though without the client sending SMTP
messages, we need a way for the client to "ask" the IMAP daemon to
copy/pass the already uploaded message into a nearby SMTP engine for
further transmission.  Does this functionality exist within Cyrus?

Of-course something like this would require client-side support as well,
though there's no point in seeking client-side support if the server
and/or protocols can/will not support such functionality.

Regards,
Gregg Berkholtz

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