What is the biggest box I can fit into a USPS drop box?

The Postal Service provides mail processing and delivery services to individuals and businesses in the

USPS Regulations For Multifamily Mailboxes As of October 5, 2006, all new construction and renovation designs in buildings require Postal

usps mail slot Conversely, USPS regulations do not govern what can be placed in a mail slot on your door This means that if a local business wants to put a

wc slot hendel requirements or contact your airline or travel agency If you want the expedited service, you need to send your application using USPS