The post office has a service (free) that will e-mail you tracking information on packages that are heading to you. (I think it also tracks things sent from your account but I'm not sure on that.)
Thus when a package just showed up I got an e-mail about it.
Thus I got a piece of mail telling me I got a piece of mail.
Thus when a package just showed up I got an e-mail about it.
Thus I got a piece of mail telling me I got a piece of mail.