| Clue | Source | Date |
|---|---|---|
| Strategy for sending a message to lots of in-boxes | ||
| Message for a big group: 2 wds. | Commuter | 22 Mar 2024 |
| Message sent to many recipients | New York Times | 07 Jun 2022 |
| Digital announcement with many recipients | Universal | 03 Nov 2021 |
| Series of remarks like "Your message is loaded with typos!"? | Universal | 08 Jan 2021 |
| Message with many bcc's | New York Times | 19 Aug 2020 |