How To Delete All Facebook Messages At Once

               Firstly you will have to install the Google chrome extension.

1. This extension will provide the feature to Delete All Facebook Messages At Once.

https://chrome.google.com/webstore/detail/facebook-delete-all-messa/hgiidlnejdlfoacoeleopkljhbckmlko

2. After the installation of this chrome extension small icon will start appearing on the top right side of the browser.

3.Login in your facebook account and open your chats.

4. Click on the small icon at right corner of your chrome and message will come to confirm delete all messages confirm the message.

click "Begin to Delete" means 21 chats will delete at once, click delete all it will delete all messages

5. Process will get start and all you facebook chats will get deleted automatically and there will be no message in your chats.

Thanks