Messages

Availability: Only within the 24-hour customer service window
Cost: Free
Approval: Not required

Description
A Free-Form Message is an arbitrary text message similar to what users send in a standard WhatsApp conversation.
WhatsApp allows free-form outbound messaging only while the 24-hour service window is active.

The service window is refreshed when the user sends a message to your business. If the window is closed, free-form messages cannot be delivered; you must use a Template Call instead.

Requirements
A Message Call succeeds only if:

• The user has interacted with your business within the last 24 hours

ENDPOINT | API Reference
POST https://api.chatwerk.de/inbox/channels/:channel_id/messages

{
  "to": "4917412345667",
  "receiver_type": 0,
  "gateway_id": "string",
  "type": "text",
  "text": "Hey\n\n Here is some text."
}

Key Characteristics

• Deliverable only within 24 hours of the user’s last interaction (Message and/or Button clicked)
• No approval needed
• No delivery cost