Delete all Facebook messages at once guide 2020. Deleting all your Facebook messages can be done as fast as possible.
To take control of your Facebook messages, go to the Facebook Fast Delete Messages extension page with your Chrome browser and click the Add to Chrome button to install.
Once installed, the extension is activated automatically. Now to delete your Facebook messages with only one click without having to open the individual conversation pages open your Facebook Message page. You will see two extra buttons, one at the top bar and another highlighted in red. Click these buttons to permanently delete your messages and conversations.