Mailboxes should be used for all postal and non-postal delivered items that could fit inside them. Advertisements delivered by hand by dedicated couriers should be allowed, in fact, required to be placed inside mailboxes. The restriction that mailboxes must be used only for mail delivered by the US Postal Service should be lifted. Mailboxes could and should be put to more and better use. For example, UPS, Federal Express, and other delivery services should be allowed to use mailboxes if the packages will fit inside them.