How To Remove Sent Messages From Facebook
Action 1: Check in to your Facebook account.
Step 2: Click the "Messages" button in the menu on the left to open the Messages web page.
Action 3: Click the conversation that contains the sent messages you want to delete. Facebook displays conversation strings in date order with the most current at the bottom of the page.
Step 4: Click the "Actions" button on top of the conversation screen.
Step 5: Select "Delete Messages" from the pull-down menu.
Step 6: Click to allow the check box close to each sent message that you intend to erase.
Action 7: Click the "Delete Selected" button and then click "Delete Messages" in the confirmation pop-up window. Facebook eliminates the selected messages.
Tip: To erase a whole conversation, including all obtained and also sent messages, click the "Delete All" choice after opening up the "Delete Messages" display.