| Part of P.O. or P.S. | 20 |
| Opposite of pre- | 16 |
| Newel | 5 |
| Miss Behavior? | 14 |
| Military exchange | 17 |
| Mail delivery, to Brits | 23 |
| LPGA tour player Sandra | 23 |
| It can come after the second word in each starred entry | 55 |
| Guarded place | 13 |
| Grape-Nuts brand | 16 |
| Fort Bragg, e.g. | 16 |
| First foreign LPGA championship winner | 38 |
| Fence support | 13 |
| Facebook contribution | 21 |
| Etiquette guru | 14 |
| Emily or parcel | 15 |
| Either end of a gate | 20 |
| Diplomatic assignment | 21 |
| Diplomat's assignment | 25 |
| D.C. newspaper | 14 |
| D.C. daily, with "the" | 32 |
| Comment in an Internet forum | 28 |
| Chime in at a blog | 18 |
| Chat-room message | 17 |
| Chat-room entry | 15 |
| Cereal manufacturer | 19 |
| Blogger's entry | 19 |
| Blog update | 11 |
| Blog message | 12 |
| Bird feeder mount | 17 |
| Big name in breakfast cereal | 28 |
| Aviation was his vocation | 25 |
| Alpha-Bits maker | 16 |
| After, before words | 19 |
| Add a comment, say | 18 |
| A Webmaster may approve it | 26 |
| A name for a newspaper | 22 |
| "It is now ___ time" | 30 |
| "___ No Bills" | 24 |
| It's stuck in a corner | 26 |
| It may get a licking | 20 |
| Business expense | 16 |
| Sender's concern | 20 |
| Pen pals' ever increasing expense | 37 |
| Mailing expense | 15 |
| Mailing cost | 12 |
| Mailing charge | 14 |
| It's sometimes due | 22 |
| It's saved by E-mail | 24 |
| Indicia | 7 |
| Fee for mail service | 20 |
| Big catalog company expense | 27 |
| Philately specimen | 18 |
| It's sent to a corner | 25 |
| Mail-related | 12 |
| Type of government employee | 27 |
| Of mail | 7 |
| Kind of clerk or card | 21 |
| Word with union and card | 24 |
| USPS part | 9 |
| Type of money order | 19 |
| The "P" in CUPW | 25 |
| Service or card preceder | 24 |
| Scale type | 10 |
| Relating to mail | 16 |
| Relating to a prestamped card or envelope | 41 |
| Pertaining to mail | 18 |
| Part of USPS | 12 |
| Part of U.S.P.S. | 16 |
| Out of control, in a slangy phrase | 34 |
| Of the mail service | 19 |
| Of mail service | 15 |
| Kind of card or union | 21 |
| Kind of card or creed | 21 |
| Kind of "service" | 27 |
| Go ___ (crack) | 14 |
| Delivery-related, in a way | 26 |
| CUPW word | 9 |
| Card from a vacationer | 22 |
| By mail | 7 |
| ___ Service | 11 |
| Contest entry, perhaps | 22 |
| Vacationer's mailing | 24 |
| A few words from afar | 21 |
| Mailed memento | 14 |
| Mail that isn't opened | 26 |
| Deltiologist's purchase | 27 |
| Army-base cut-up? | 17 |
| "Wish-you-were-here" medium | 37 |
| "Wish you were here" medium | 37 |
| Scholar's pursuit, briefly | 30 |
| Scholar in an advanced research prog. | 37 |
| Ph.D.'s next hurdle | 23 |
| Ph.D.'s further studies | 27 |
| One doing research, maybe | 25 |
| Like some specialized research, for short | 41 |
| Like some advanced research, briefly | 36 |
| Fellow, often | 13 |
| Displayed publicly | 18 |
| Tacked up | 9 |