How to Delete Facebook Messages You Sent
Step 1: Check in to your Facebook account.
Step 2: Click the "Messages" switch in the menu on the left to open the Messages page.
Step 3: Click the conversation that contains the sent messages you want to remove. Facebook shows conversation threads in date order with one of the most current at the bottom of the page.
Step 4: Click the "Actions" button at the top of the conversation display.
Step 5: Select "Delete Messages" from the pull-down menu.
Step 6: Click to make it possible for the check box close to each sent message that you intend to delete.
Step 7: Click the "Delete Selected" button and afterwards click "Delete Messages" in the confirmation pop-up window. Facebook gets rid of the chosen messages.
Pointer: To remove an entire conversation, consisting of all gotten as well as sent messages, click the "Delete All" choice after opening the "Delete Messages" screen.