The question arises about email addresses as to whether it is best to write what they actually say or whether to just use the email address in its regular format.
He says, "It is mls, my initials; the symbol for at; the word revolutionbrakes, all jammed together; then dot com."
So you put that sentence into the transcript, or you put in "...mls@revolutionbrakes.com...."
I would generally recommend simply putting in the actual email address as it is written in the URL unless there is some special focus on the words or letters themselves. Readability wins!
Happy punctuating!
Margie