You had a mail sent to your Facebook email address (xxx@facebook.com) and it didn't arrive? Can you try go to Messages (either on the left-hand menu near the t

You had a mail sent to your Facebook email address (xxx@facebook.com) and it didn't arrive? Can you try go to Messages (either on the left-hand menu near the top, or the middle icon between friends and notifications) and select the "Other" under Messages in the left-hand menu?