> For the complete documentation index, see [llms.txt](https://userguide.luffa.im/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://userguide.luffa.im/communication.md).

# Communication

- [Private Messages](https://userguide.luffa.im/communication/private-messages.md)
- [Groups](https://userguide.luffa.im/communication/groups.md)
- [Luffa's AI Auto-Translation Feature](https://userguide.luffa.im/communication/luffas-ai-auto-translation-feature.md)
- [What is Luffa's Safe Space?](https://userguide.luffa.im/communication/what-is-luffas-safe-space.md)
- [How does automatic message deletion work?](https://userguide.luffa.im/communication/how-does-automatic-message-deletion-work.md)
- [How to delete a contact on Luffa ？](https://userguide.luffa.im/communication/how-to-delete-a-contact-on-luffa.md)
- [How to start an encrypted one-on-one voice or video call？](https://userguide.luffa.im/communication/how-to-start-an-encrypted-one-on-one-voice-or-video-call.md)