Posted 31 January 2017 - 10:46 PM
The subject is the text you see listed in your inbox for a message. I don't know how to describe this any better. When you compose a message you tend to enter the subject immediately after you enter the e-mail address or addresses you're sending to. The analog to the subject field here is "Hotmail sweep rules."
The body is the message text itself. The analog here is what you're reading at this moment.
The header is information that is used by the e-mail programs themselves to route the message from point to point and you generally don't see it unless you specifically elect to display it in your e-mail interface. The number of fields in the header is extensive and far more complex than I care to delve into right now (mostly because I don't remember a lot of them myself).
You will generally use the "From", "Subject", and "Body" fields when you set up filters for virtually any purpose.
Brian AKA Bri the Tech Guy (website in my user profile) - Windows 10 Home, 64-Bit, Version 1803, Build 17134
. . . the presumption of innocence, while essential in the legal realm, does not mean the elimination of common sense outside it. The willing suspension of disbelief has its limits, or should.
~ Ruth Marcus, November 10, 2017, in Washington Post article, Bannon is right: It’s no coincidence The Post broke the Moore story