What is held for mailability determination?

Held for mailability determination (HM) is a status given to a mail item that has been flagged or held by the USPS for further inspection. This is done to determine if the item meets the USPS's mailability standards and regulations.

When a mail item is held for mailability determination, it is examined by a USPS employee to check if it meets the USPS's standards for size, weight, shape, packaging, addressing, and content. Some items that may be held for mailability determination include hazardous materials, live animals, perishable items, and items with inappropriate or dangerous content.

If the mail item is found to be non-mailable, the USPS will notify the sender and may return the item to them or dispose of it. If the item is found to be mailable, it will be released for delivery or further processing.

It is important for senders to be aware of the USPS's mailability standards and regulations to ensure their mail items are accepted for delivery. The USPS provides a comprehensive list of mailability guidelines on their website.