Delete Sent Facebook Message
Action 1: Sign in to your Facebook account.
Action 2: Click the "Messages" switch in the menu on the delegated open up the Messages web page.
Action 3: Click the conversation which contains the sent messages you intend to delete. Facebook shows conversation strings in date order with one of the most recent below the page.
Tip 4: Click the "Actions" switch on top of the conversation screen.
Tip 5: Select "Delete Messages" from the pull-down menu.
Action 6: Click to enable the check box close to each sent message that you want to erase.
Action 7: Click the "Delete Selected" button and afterwards click "Delete Messages" in the verification pop-up home window. Facebook eliminates the selected messages.
Pointer: To delete an entire conversation, consisting of all received and also sent messages, click the "Delete All" alternative after opening the "Delete Messages" screen.