How can I see all the details of where the email message is from?

The information provided in the from field is often very minimal, and I can’t find any way to have it give me the entire details of where (or who) the message is from. Given the amount of spam there is out there, I don’t feel I’m getting enough of the information I need.

If you want to show email address simply hover cursor over the name in the “From” field.