Computer: Email
Remail   (+2, -1)  [vote for, against]

Dynamic email that can be edited or updated by the sender if it has not been opened by the recipient yet. Effectivly the old email is deleted and a new one replaces it, but with the original timestamp.
-- simonj, Jun 04 2009

I think you'll be able to do this in Google Wave, if I understood the demo correctly. I imagine the timestamp will update, however.
-- tatterdemalion, Jun 04 2009

This would help those who send off fiery emails late at night while drunk.
-- ldischler, Jun 04 2009

Easiest way to do that would be to host the message on the sender's mail ISP... the receiver would simply receive a notice "You Have Mail from <...>" possibly including the Title, and then tell their Mail Host to go get the Message and Attachments (or not) from the Sender's Host.

That way the Sender could not only change the message, but delete it entirely, or delete the Notification on the Receiver's Host.

I likey, cut down on Spam bandwidth.
-- FlyingToaster, Jun 05 2009

random, halfbakery