Computer Help and Support

... this is trivially forgeable. Don't trust it. Doesn't matter if it is "Joe Biden " or not, it's not to be believed.

Depending on the software you're using to read your mail, there's usually some sort of "show all headers" command (or show raw message).

With some practice, you can follow the "Received: from" lines and see which computers are talking with each other to deliver the email. The domain-names in there can give a hint about where the message was sent from.

Then it's a matter of matching the domain names to the address in the from field, and if you're lucky they'll line up ok. If not .. it's usually (not always) a forgery.

Sorry I can't be more specific, figuring this stuff out is a bit of an art.