Can you cancel your snail mail from USPS?
The United States Postal Service will deliver all mail. In that
sense, no one can "cancel" mail delivery. There are, however, two
ways to temporarily stop mail.
1. If going away for several days or longer, you can put your
mail delivery on hold. The person must usually pick up the
accumulated mail and sign for mail delivery to resume.
2. If you move, you are not bound to fill out a change of
address card. However, all legitimate companies can still get your
address by other means.