What does Conversation Clean Up do?Ĭonversation Clean Up evaluates the contents of each message in the Conversation. Multiple people might reply to different messages in the Conversation. In many Conversations, there might be many replies back and forth. The messages of a Conversation have the same subject.įor example, when you send a message to someone and then they reply, a Conversation results. A Conversation is the complete set of email messages from the first message through all responses. You might know a Conversation by the term email thread. Redundant messages throughout a Conversation are moved to the Deleted Items folder. The Conversation Clean Up feature in Outlook can reduce the number of messages in your mail folders. Outlook for Microsoft 365 Outlook 2021 Outlook 2019 Outlook 2016 Outlook 2013 Office for business Office 365 Small Business More.