The process is just as straightforward on your Mac: Open Messages: Click on the Messages application. Remove Conversations: Right-click on the conversation you wish to delete and select "Delete." ...

If you added additional accounts to your Mac, deleting these accounts is a smart and straightforward action. Here's how to ...

Google is slowly rolling out a new feature that lets you delete messages from all recipients' devices. You might want to run the beta if you're interested in trying the feature out early.