You've got mail

This came from a friend:

A man was out cutting his lawn, noticed his neighbor come out and look in her mailbox. She closed it, went back inside. A few minutes later, she came out again, checked her mailbox, then angrily slammed it shut.

He was just finishing his trimming, when she came stomping out of the house, went to her mailbox, jerked the door open, glared inside, then almost broke the lid slamming it closed again. They were friendly, so he went over to ask what was troubling her.

She replied, "My stupid computer keeps telling me I have mail!"