Message the payer

Send the customer an SMS after a successful payment, with a receipt, ticket or booking number.

After a payment succeeds, you can send the payer one more message through MoMo: a receipt number, a ticket id, a booking code. MoMo sends it by SMS (or email, depending on how they paid).

curl -X POST https://api.razpay.razonetix.com/v1/payments/order-1001/notify \
  -H "Authorization: Bearer $RAZPAY_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{ "message": "Thanks! Your ticket number is 4821." }'

Only for successful collections made with a payment request.
Up to 160 characters. Unsupported symbols are removed.
language (optional) is an ISO 639 code MTN uses to pick a message template.
MTN only allows it within a window after the payment, and limits repeats.

Message	Meaning
`notifications can only be sent for successful payments`	The payment hasn’t succeeded.
`the window for sending a notification for this payment has passed`	Too late for this payment.
`too many notifications for this payment, try again later`	Slow down.

Admins can send one from Transactions too: open a successful payment and choose Message payer.