| Clue | Source | Date |
|---|---|---|
| Ambitious email goal, and a hint to four squares in this puzzle | New York Times | 18 Aug 2022 |
| Rigorous email management strategy | New York Times | 21 Mar 2022 |
| Goal of having no unread emails | New York Times | 09 Mar 2019 |
| Goal of having no unread emails |