# Coral Messaging > WhatsApp guides and reference for API integration with the Coral Messaging groups platform ## Docs - [Introduction](https://docs.coralmessaging.com/en/api-guide/introduction.md): Provisioning Coral APIs - [OpenAPI](https://docs.coralmessaging.com/en/api-reference/index.md): Coral Messaging OpenAPI specifications - [Coexistence Functionality](https://docs.coralmessaging.com/en/functionality/coexistence-functionality.md): WhatsApp Coexistence requirements, limitations, and feature behavior - [Groups Functionality](https://docs.coralmessaging.com/en/functionality/groups-functionality.md): WhatsApp groups functionality and Coral support - [Groups Quick Tips](https://docs.coralmessaging.com/en/functionality/groups-quick-tips.md): Let's create some group chats - [Add Standard User](https://docs.coralmessaging.com/en/getting-started/add-standard-user.md): How to add a standard Coral user - [Add Synced User](https://docs.coralmessaging.com/en/getting-started/add-synced-user.md): How to add a Coral synched user - [Configure Account](https://docs.coralmessaging.com/en/getting-started/configure-account.md): Admin controls to customize your Coral product - [Coral Dashboard](https://docs.coralmessaging.com/en/getting-started/coral-dashboard.md): Visualize chats and get insights - [Create an Account](https://docs.coralmessaging.com/en/getting-started/create-account.md): Create a Coral account and a WhatsApp Business account - [Roles and Permissions](https://docs.coralmessaging.com/en/getting-started/roles-and-permissions.md): Permissions by user type - [Hubspot](https://docs.coralmessaging.com/en/integrations/hubspot.md): How to connect to Hubspot and manage your integration - [Salesforce](https://docs.coralmessaging.com/en/integrations/salesforce.md): How to connect to Salesforce and manage your integration - [Welcome](https://docs.coralmessaging.com/en/welcome.md): A better way for employees to communicate with clients and contacts over WhatsApp. - [Official Business Account (OBA)](https://docs.coralmessaging.com/en/whatsapp/official-business-account.md): OBA status from WhatsApp and how to secure it - [Sending Messages from the API](https://docs.coralmessaging.com/en/whatsapp/sending-messages-from-the-api.md): WhatsApp policies for message sending - [WhatsApp Billing](https://docs.coralmessaging.com/en/whatsapp/whatsapp-billing.md): WhatsApp pricing and setting up a payment method ## Optional - [Coral Website](https://www.coralmessaging.com/) - [Coral Blog](https://www.coralmessaging.com/blog) - [WhatsApp Docs](https://business.whatsapp.com/developers/developer-hub)