I think you're asking about tracking of your Private Messages. This is something that others have asked about too.
Unfortunately, there is no tracking or recording of what's sent. The Private Message form just generates a message. We don't save a copy.
Someone else suggested having a copy e-mailed to you. This should be feasible. Would you want that? I hesitate to have thousands of additional e-mail messages being sent from WikiTree (it makes us look like spammers, costs money, and has other problems associated with it, not least of which is the crowding of your inbox) but it might be worth it.