USPS Approved Mailboxes

Don't use post office drop boxes on Sundays or holidays, USPS warns usps mail slot “Customers who need to mail packages with postage stamps that are larger than one-half inch thick or heavier than 10 ounces must conduct the transaction in usps mail slot Residential Mail Slots from National Mailboxes are perfect for USPS residential door mail delivery We have two attractive styles to choose from

nine slot They look like glass-fronted tubes with small slots to let people drop their letters, postcards, etc The postal workers affix these USPS mail