# DEVELOPER

- [APIs](/developer/apis.md): This is the developer documentation for QuickReply.ai.
- [Trigger Drip Campaign API](/developer/apis/trigger-drip-campaign-api.md)
- [Send Template API](/developer/apis/send-template-api.md): This guide is designed to provide you with a comprehensive understanding of how to effectively utilize our API for sending WhatsApp template messages.
- [WhatsApp Chat API](/developer/apis/whatsapp-chat-api.md): This section explains how you can use QuickReply.ai’s APIs to build a chatbot with your end users over WhatsApp.
- [External CRM Integration & Contact Syncing](/developer/apis/external-crm-integration.md): QuickReply.ai can sync your Contacts/Leads to any external CRM that exposes HTTP APIs or webhooks.
- [Fetch Campaign Messages Stats](/developer/apis/fetch-campaign-messages-stats.md)
- [Tutorials](/developer/tutorials.md)
- [How to send WhatsApp Message via API using QuickReply.ai?](/developer/tutorials/how-to-send-whatsapp-message-via-api-using-quickreply.ai.md): Businesses often want to start a WhatsApp conversation automatically when something happens — like a user signs up, places an order, submits a form, requests a demo, etc.