Abstract
Users go to great lengths to be notified as quickly as possible that
they have received new mail. Most of these methods involve polling
to check for new messages periodically. A push method handled by the
final delivery agent gives users quicker notifications and saves
server resources. This document does not specify the notification
method but is expected that using existing instant messaging
infrastructure such as Zephyr, ICQ, or SMS messages will be popular.
This draft describes an extension to the Sieve mail filtering
language that allows users to give specific preferences for
notification of Sieve actions.
http://www.ietf.org/internet-drafts/draft-martin-sieve-notify-01.txt
Wolfgang Segmuller