Originally Posted by
NotHamSarnie
I'm not so sure about this. I've booked for Mr. Sarnie and me, logged in as me, but putting his SM number into the reservation. I just put my own email address for the notification and I receive the email rather than him. I wouldn't swear to this but I think it's right.
It's a little unclear if the OP is booking a ticket with miles or cash, but any skymiles redemption activity now sends an email to the email address associated with that skymiles number.