Send a WhatsApp Message Template (MTM)

In this code snippet you learn how to send a WhatsApp Message Template Message (MTM) using the Messages API.

IMPORTANT: If a customer messages you, you have 24 hours to respond to the customer with a free-form message. After this period you must use a message template (MTM). If a customer has not messaged you first, then the first time you send a message to a user, WhatsApp requires that the message contains a template. This is explained in more detail in the Understanding WhatsApp topic.


Ensure the following variables are set to your required values using any convenient method:

Key Description
WHATSAPP_NUMBER The WhatsApp number that has been allocated to you by Nexmo.
TO_NUMBER The phone number you are sending the message to.
WHATSAPP_TEMPLATE_NAMESPACE The namespace ID found in your WhatsApp Business Account. Only templates created in your own namespace will work. Using an template with a namespace outside of your own results in an error code 1022 being returned.
WHATSAPP_TEMPLATE_NAME The name of the template created in your WhatsApp Business Account.

NOTE: Don't use a leading + or 00 when entering a phone number, start with the country code, for example, 447700900000.


Create an application
If you do not have an application you can create one. Make sure you also configure your webhooks.

Write the code

Add the following to

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curl -X POST \ \
  -H 'Authorization: Bearer' $JWT \
  -H 'Content-Type: application/json' \
  -d '{
                  "default":"Nexmo Verification"
      "whatsapp": {
        "policy": "deterministic",
        "locale": "en-GB"

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Run your code

Save this file to your machine and run it:


Try it out

When you run the code a WhatsApp message template (MTM) is sent to the destination number.

Further information