The WITHIN extension extends the SEARCH command to search for messages which are older or younger than a specified limit. This makes very little difference at first, but when WITHIN is used with mailbox views, it can be very useful. "UNREAD OLDER 604800" is a simple search for all unread mail older than one week (604800 seconds).
The WITHIN extension is part of the LEMONADE group of extensions.
In case of questions, please write to email@example.com.
Last modified: 2010-11-19