If you delete messages and emails that you have created and sent from facebook can they be retrieved from Facebook by subpoena?

Yes, deleted messages and emails sent through Facebook may potentially be retrieved by law enforcement through a subpoena, as Facebook retains data for a certain period even after deletion. However, the specifics can vary depending on the nature of the request and the data retention policies in place at the time. It's important to note that while you may delete messages from your account, they might still exist on Facebook's servers.