What was the name of the person who (apparently) sent the first "junk-spam" email?

The person was Marketer Gary Thuerk at the DEC Computer company

quote:

1 May 1978 1233-EDT

Why? Read this www.templetons.com/brad/spamreact.html

Has the Full transcript and all the names of the recepients if you scroll down the page
and also the some of the feedback.
BTW I noted the Use of the Word "at" instead of of the @ character for the addresses. When did that come into use?

Good answer Bedstor. Thanx! @ was less common before e-mail became widespread in the mid-1990s,