> For the complete documentation index, see [llms.txt](https://learn.doubletick.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://learn.doubletick.io/whatsapp-business-api.md).

# WhatsAPP BUSINESS API

- [WhatsApp Business Platform pricing changes: changelog](https://learn.doubletick.io/whatsapp-business-api/whatsapp-business-platform-pricing-changes-changelog.md): Learn how WhatsApp Business Platform pricing has changed over time, with the latest changes first.
- [How Conversation Charges Works](https://learn.doubletick.io/whatsapp-business-api/how-conversation-charges-works.md): Learn how conversation charges work in WhatsApp API on DoubleTick. Understand how different template categories affect charges within the same 24-hour window.
- [Manage and View Account Quality on Meta](https://learn.doubletick.io/whatsapp-business-api/manage-and-view-account-quality-on-meta.md): Learn how to manage and view your account quality on Meta. Understand quality ratings, status impacts, and tips for maintaining high-quality ratings.
- [Messaging Limits in WhatsApp API](https://learn.doubletick.io/whatsapp-business-api/messaging-limits-in-whatsapp-api.md): Learn about WhatsApp API messaging limits, business-initiated conversations, criteria for increasing limits, and how quality ratings affect your limits.
- [Country and regional restrictions on WhatsApp messaging](https://learn.doubletick.io/whatsapp-business-api/country-and-regional-restrictions-on-whatsapp-messaging.md): Understand which countries and regions are blocked or restricted for WhatsApp Business Platform messaging, and how that affects DoubleTick users.
- [Upcoming Changes to WhatsApp Messaging Limits – Effective October 7, 2025](https://learn.doubletick.io/whatsapp-business-api/upcoming-changes-to-whatsapp-messaging-limits-effective-october-7-2025.md)
- [Frictionless Messaging in DoubleTick](https://learn.doubletick.io/whatsapp-business-api/frictionless-messaging-in-doubletick.md)
- [Direct send guide](https://learn.doubletick.io/whatsapp-business-api/direct-send-guide.md): Understand what Direct Send is, who's eligible, what it supports, and how it works alongside Frictionless Messaging on DoubleTick.
- [Template pacing and Business portfolio pacing](https://learn.doubletick.io/whatsapp-business-api/template-pacing-and-business-portfolio-pacing.md): Learn what template pacing and business portfolio pacing are, why your WhatsApp messages may be delayed or dropped, and how to avoid it.


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