Overriding the Programming  Office automation can be very useful. However, with programming, one size does not fit all. There are always exceptions to the Rules.   You can select a conversation and Ignore (exclude) it from the Clean Up.   6. Try it: Ignore a Conversation Go to Home ->Delete->Ignore.   You will be prompted twice. First: This action will apply to all items in the selected conversation. Click: OK   Second: The selected conversation and all future messages will be moved to the Deleted Items folder.   Click: Ignore Conversation.   So, when the the Clean Up runs, this Conversation will not be trashed. Home ->Delete->Ignore Exam 77-884: Microsoft Outlook 2010 3. Managing Email Messages 3.1. Clean up the mailbox: Ignore a Conversation