Enable SMS delivery and phone number validation via Vonage using API keys.
- Go to WooCommerce → SMS Settings and select Vonage (Nexmo).
- Log in to your Vonage account.
- Copy your API Key and API Secret.
- Go to Your Numbers and copy your sender number.
- Paste the API key, secret, and sender number into SMS For WooCommerce Settings.
- Save changes.

How to get your Vonage API Key:
- Login into your Vonage account.
- Find your Nexmo API Keys into your Nexmo account.
- Copy the API credentials and use them in the SMS provider settings.
- Go to Your number section and copy the Sender number and put it in SMS Settings as a Sender id/name.

About Vonage
you can choose from global calling plans with local numbers from over 96 countries for voice, messaging, and video conferencing.
