Clean up your inbox - support.microsoft.com
support.microsoft.com › en-us › officeUse Clean Up Conversation to tidy up your email conversations and reduce the number of messages in your inbox. Select an email conversation that you'd like to clean up. Select the arrow next to Delete > Clean Up Conversation. You can also clean up entire Folders. If prompted, confirm by selecting Clean Up. And the emails are sent to the Deleted Items
Using Outlook's Clean Up Tool
www.slipstick.com › outlooks-clean-folder-commandMar 14, 2018 · In addition to Clean Up Folder, Outlook can also Clean Up Conversations, removing older messages in a thread that are quoted in newer messages. Right click on any thread and choose Clean Up Conversation in the context menu or look for it on the Clean Up button in the Delete Group on the Home tab. Clean up Folder and Clean Up Folder & Subfolders commands are also on the Folder tab.