Channels

Understand WhatsApp QR, Meta WhatsApp, SMS, and unified delivery modes.

KarFlows can deliver through multiple channels.

Supported channel IDs

Channel ID	Meaning
whatsapp_qr	Send from a connected WhatsApp QR device
whatsapp_meta	Send with Meta WhatsApp Cloud API
sms	Send a text SMS through KarFlows SMS Gateway

Fallback delivery

Fallback mode tries channels in order and stops when one succeeds.

{
  "channels": ["whatsapp_qr", "whatsapp_meta", "sms"],
  "deliveryMode": "fallback"
}

Recommended for order alerts, booking confirmations, and OTP cost control.

Send to all

All mode sends to every selected channel.

{
  "channels": ["whatsapp_qr", "sms"],
  "deliveryMode": "all"
}

Recommended only when the message must arrive in multiple places. Each successful channel can be charged separately.

WhatsApp QR sender selection

If the customer has more than one QR device, pass whatsappFrom.

{
  "whatsappFrom": "447405993704"
}

KarFlows validates that the sender belongs to the same customer account.

Meta sender selection

Meta sending uses the customer’s connected WhatsApp Business account. If a template is required, include the template data requested by your KarFlows Meta API setup.