When Is Mail Picked Up From Mailboxes?

Just a month ago, the USPS installed new boxes that didn't allow for drive-thru mail drop-off

As explained in the USPS glossary, mail carriers complete their regular “carry-out mail” and then defer to the relay box to grab additional mail

usps mail slot requirements Since some USPS blue boxes have slots only big enough to fit a letter, not a package, how does the USPS determine which boxes will not

slot definition mail The lip over the letter slot often broke, letting in rain and snow By 1891 the Post Office Department had over 48,400 letter boxes of various