| Answer | Crossword Clue |
|---|---|
| MAILED | Sent in a stamped envelope |
| MAILS | Sends in a stamped envelope |
| MAILIN | Submit via a stamped envelope |
| RETURNMAIL | What a self-addressed stamped envelope comes by |
| POSTAGEDUE | It might be stamped on an envelope |
| MAILED | Stamped and sent |
