One place I worked at had exactly two people in their address list with my surname. I appeared as Andy and the other chap appeared as Andrew.
Senders assumed that because the mail system had not complained about what they had typed, then it must have been right. They ignored the filling-in bit, which showed UK in my address, and AU in his.
So he ended up forwarding things about IT, and I forwarded things about his line of work. We added comments telling each other a little about ourselves, and promising that if either was passing the other, then beer would be involved.
So one day I turned up in the office in Brisbane, and announced to the receptionist "Andy A to see Andy A".
After a tour of the office, beer WAS involved.