Okay, first to answer the “How to do it” part of the question: To un-ignore an email thread, find a message that is part of the ignored thread and select it. The Ignore<\/i> button in the ribbon will go into the pressed state to indicate that this thread is being ignored. Click the Ignore<\/i> button to uncheck it, thereby un-ignoring the thread.<\/p>\n
Note that un-ignoring a thread will not un-delete the messages that were ignored when the rule was in effect. But future messages will not be ignored.<\/p>\n
Okay, so how does this work internally? If you open your Rules, you won’t find any rules for deleting the ignored thread. Where are the ignored-thread rules kept?<\/p>\n
The rules for ignored threads are kept in a hidden folder in your mailbox named Conversation Action Settings<\/i>, in the Associated Contents<\/i> table. You can use the MFCMAPI tool<\/a> to view them.<\/p>\n This trick is handy not just for snooping around under the hood: It’s also useful if you want to un-ignore a thread for which you don’t have a copy in your Deleted Items<\/i> folder. You can go into the Associated Contents<\/i> table and delete the rule for the ignored thread. (Note: I’ve never done this myself, but it’s nice to know I could do this if I had to.)<\/p>\n