- POBOX
- Mail dest.
- Numbered dest.
- Mailing address part, at times
- Street address alternative (abbr.)
- Disallowed FedEx destination
- FedEx won't deliver to it
- FedEx no-no, sometimes
- Mail svc. option
- Mail dely. compartment
- Many a bus. address, and a literal hint to 18-, 25-, 47- and 63-Across
- Ltr. holder
- Usual bus. address for sending in payments
- Business-addr. part, parhaps
- Part of some addresses
- Ltr. receptacle
- Part of many business addrs.
- Part of some business addrs.
- Address abbr.
- Addr. line, at times
- Where some cos. pick up their mail
- What UPS won't deliver to
- Abbr. on many letters
- Mailing address.
- Part of many addresses
- Part of many a bus. address
- Letter getter
- Mail receiver, in brief
- Numbered rental
- Certain mailing address, for short ... or a hint to 14 squares in this puzzle
- Alternative to a street address
- Mail delivery rental
- Mail destination, maybe
- Address that's just a hole in the wall
- Mailing addr. for business correspondence, often
- Mailing address that FedEx generally doesn't deliver to
- What FedEx won't deliver to
- Hole in the wall where you may pick up a check?
- Env. designation
- Mail letters?
- Address with a st. but no st.
- Snail mail cubbyhole
- FedEx no-no, often
- Part of a bus. address, perhaps
- Alternative to a street address: Abbr.