> For the complete documentation index, see [llms.txt](https://docs.fullscreen.no/info/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.fullscreen.no/info/game-creator-2-assets/mailbox/triggers.md).

# Triggers

- [On Letter Received](https://docs.fullscreen.no/info/game-creator-2-assets/mailbox/triggers/on-letter-received.md)
- [On Letter Deleted](https://docs.fullscreen.no/info/game-creator-2-assets/mailbox/triggers/on-letter-deleted.md)
- [On Letter Hidden](https://docs.fullscreen.no/info/game-creator-2-assets/mailbox/triggers/on-letter-hidden.md)
- [On Letter Opened](https://docs.fullscreen.no/info/game-creator-2-assets/mailbox/triggers/on-letter-opened.md)