Send verification code via WhatsApp

Create a verification template

• Create template

• Select verification type template(Understanding Template Types)

Set template content

• Select template language (content generated by meta tags).

• Set optional content:

  • Choose the sending method: Copy code (copy verification code)

  • Add security tips and verification code expiration time reminders (optional)

  • Set message expiration time (optional)

We recommend setting a custom expiration period; you can choose 1–10 minutes as the message validity period. Once set, your authentication message must be sent within this period. If the message does not reach the user's device within this timeframe, it will be withdrawn, you will not be charged, and your customers will not see the message. If you do not set a custom expiration period, the standard WhatsApp message validity period (24 hours) will apply. This means you may incur additional charges for invalid messages sent after the timeout.

• Click the submit button.

• Returning to the template list, you can see the template you just created.

• When you see the template status change to active, it means the template is available.

Send verification SMS

1

Send test SMS via Inbox

• Enter Send page

• Enter the sending number (number format: +91286****39)

• Choose your business number

• Select template

• Fill variables

• The results can be viewed on logs page.

2

Send test SMS via API

• See the API documentation for details.

• curl example:

curl

Copy

curl --location --request POST 'https://wa.antgst.com/v1/whatsapp/messages/send' \
--header 'Authorization: Bearer 76062********456' \
--header 'Content-Type: application/json' \
--data-raw '{
    "to": "880******598",
    "from": "155****350",
    "type": "template",
    "template": {
        "name": "template_authentication_202",
        "parameters":"12324",
        "language": "bn"
    }
}'

• The results can be viewed on logs page.

Listen for Webhook push notifications

1

Configure callback address

• Access the configuration page to configure the webhook.

• Create a webhook endpoint and fill in the callback URL.

• Select WhatsApp and choose "All" for the event.

2

Monitor OTP message status

For each message you send, a notification about the message's status will be sent to your webhook callback.

status

description

failed

Your message failed to send.

sent

The message you sent is being transmitted within WhatsApp's system.

delivered

Your message has been delivered to the customer's device.

read

Your message has been read by the customer. The read notification is only available to customers who have enabled read receipts.

See the API documentation for details.