Poco General FAQ - Searching for marked messages

Q: I know you can use Show marked to view only marked messages in one mailbox, but is it possible to search all mailboxes for messages that have been marked?
 
A:
In Poco 3, this option is built into the Search feature.
You can search for the "X-Mark" header, so searching for "X-Mark: 2" would find all messages marked with second marking. You have to keep the space in front of the number for this to work well.