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

# EXTRAS

- [WhatsApp Business API - Unsupported Messages](https://docs.gallabox.com/extras/whatsapp-business-api-unsupported-messages.md): The reason why business might receive a empty message from user
- [Understanding Message Delivery Issues on WhatsApp](https://docs.gallabox.com/extras/understanding-message-delivery-issues-on-whatsapp.md): Uncover the reasons behind undelivered WhatsApp messages. From recipient inactivity to country restrictions, explore the common issues and possible solutions for a seamless messaging experience.
- [WhatsApp’s New Per-user Messaging Limits](https://docs.gallabox.com/extras/whatsapps-new-per-user-messaging-limits.md): Discover how WhatsApp's per-user message limits impact businesses worldwide. Improve user experience and interaction quality with Gallabox features.