When all else fails, give Jewish geography a try.

Seriously, I just spent the past hour looking for the American Express employee email chain. Is it @americanexpress.com? Is it @amex.com? First name then last name? First initial, last name?

Of course, I then ask a friend of mine to help me find it, and five minutes later she sends me the address. "A friend's cousin used to work there," she said.

So a friend's friend's cousin got me the American Express employee email address. Gotta love it!