The Transactional WhatsApp API lets you send important, timely, non-promotional messages such as order confirmations, shipment notifications, delivery updates, appointment reminders, payment notifications, and account verifications. These messages do not require user opt-in or interaction. By leveraging WhatsApp’s large user base and rich media features, you can improve customer communication, satisfaction, and retention.
You can send two main types of transactional messages:
Template-based messages: They are pre-approved by WhatsApp and ideal for sending standardized, consistent content such as order updates, reminders, or confirmations.
Free-form text messages: They are sent without using a template, allowing you to deliver plain text content to end users.
Transactional WhatsApp Message Types
The table below lists the different types of transactional messages you can send through the API, along with direct links to their implementation guides.
Message Type | API Documentation |
|---|---|
Template-based Messages | |
Free-form Text Messages | |
Media Messages | |
File Handling |
Refer to Webhooks for Transactional WhatsApp to learn how Insider One processes and tracks your transactional WhatsApp messages.
Both Transactional API and Conversational API can send marketing and utility messages. Use Transactional API for one-way messaging, and Conversational API for two-way messaging. Neither API enforces opt-in control, since neither is connected to UCD.