I have a footer that says: Not interesting? Send a reply with 'remove me please'. Now when people reply they reply with "remove me please" I want to create a filter in gmail that finds all mails with the words "remove me please" BUT it needs to exclude my original expression: Not interesting? Send a reply with 'remove me please'. Because otherwise even if people are keen it's finding the original expression in the copy of the original email! Any idea how to create a filter that does this?