I would like the test email to be an exact replica of what the actual email broadcast would look like. In my test email, the automated ~Contact.FirstName~ is not correct to the actual recipients name. I understand the layout and body of the email is correct, but the introduction and auto-fills are vital to ensuring accuracy in email broadcasts.
You would have to send a test contact through a test broadcast to really know. Doing it from within the builder is going to show you the merge code because an actual contact hasn’t been applied to it (note that a user is not the same as a contact)