If you’re looking to delete multiple messages on your Mac, there are a few different ways to go about it. The first option is to use the Messages app on your Mac. To delete multiple messages, open the Messages app and select the message you want to delete. Next, click on the three lines in the top left corner of the message window and select Delete Message. If you want to keep a copy of the deleted message, you can also choose to save it as a draft or copy it to your clipboard before deleting it. ..