| 100% | ADDR | 4 | What's written on an envelope to be mailed: Abbr. |
| 51% | POSTCARD | 8 | Doesn't need an envelope to be mailed |
| 48% | SRTA | 4 | Abbr. on an envelope to Mexico |
| 47% | SEND | 4 | What you hit on an e-mail that is ready to go |
| 44% | POSTMARK | 8 | Ink stamp on an envelope that might identify when and where it was mailed |
| 43% | SEALED | 6 | Like an envelope that's ready to be mailed |
| 42% | ADDRESS | 7 | Something written on an envelope |
| 41% | ATTN | 4 | "This is for.." on an envelope: Abbr. |
| 41% | IMO | 3 | "This is what I have to say," on the internet: Abbr. |
| 40% | ATTN | 4 | Letters before a person's name on an envelope: Abbr. |
| 39% | ATTN | 4 | Letters on an envelope: Abbr. |
| 39% | DEBTALF | 7 | ... Looking back on it, it's weird the rental company was named ___. What does an ET owing money have to do with trucks?
|
| 39% | EXAMPAPER | 9 | On what to write one's final words? |
| 39% | MRANDMRS | 8 | Titles on an envelope to a married couple, sometimes: 3 wds. |
| 38% | ATTN | 4 | Abbr. on an envelope |
| 38% | UNREADEMAILS | 12 | What a number on an envelope might signify |
| 37% | BRADS | 5 | Fasteners ... or, if you change the fourth letter to an S, what the fasteners might be made of |
| 37% | ADDRESS | 7 | Write this on an envelope |
| 37% | STRING | 6 | What might be used to connect evidence on a detective's corkboard |
| 37% | KISS | 4 | What a couple might be encouraged to do on a stadium's Jumbotron |
| 36% | EMAJ | 4 | What Bruckner's Symphony No. 7 is written in: Abbr. |
| 36% | PARCHMENT | 9 | Palimpsests used to be written on this |
| 36% | SCRAMBLES | 9 | What all the answers on this puzzle's 37-Across are to each other |
| 36% | ODE | 3 | One was written on an urn |
| 36% | APO | 3 | Abbr. on mail to a soldier |
| 36% | BOWSTRING | 9 | What an arrow is nocked to |
| 36% | VAR | 3 | What "whisky" is to "whiskey": Abbr. |
| 36% | ATTN | 4 | Routing abbr. on an envelope |
| 36% | GREEK | 5 | What unintelligible writing is to me? |
| 35% | TWEET | 5 | What a post on X used to be called |