What happens to unendorsed Bound Printed Matter if it is undeliverable?

Unendorsed Bound Printed Matter that is undeliverable is discarded in a UBBM (Unaffixed Bulk Business Mail) container. This procedure is part of postal regulations regarding mail that cannot be delivered and does not have the necessary instructions from the sender for return or redirection. Since unendorsed items lack any guidance for further action, discarding them in the designated container ensures they are properly handled in accordance with postal service policies.

Other scenarios like returning to the sender or redirecting to a commercial address typically apply to items that have specific marking or instructions indicating what should happen in the event of non-delivery. Storing in a holding area might pertain to other types of mail that require further action or potential resolution, but for unendorsed Bound Printed Matter, the clear directive is to dispose of it in the appropriate manner.