Vonage, formerly Nexmo, offers phone numbers in many countries for SMS and voice. A number from your Vonage account can handle both, so contacts can text it or call it and be answered by your flows.

Before you start

You'll need a Vonage API account, along with its API key and API secret, from the API Settings page of the Vonage dashboard. Since August 15, 2025, Vonage no longer shows your API secret there, so use the one you saved, or change your API secret to get a new one.

You can use a number that's already on your Vonage account, or buy a new one while adding the channel.

Adding the channel

Go to Settings > Channels and click New Channel. Vonage is under SMS & Voice, or you can type its name in the search box.

If your workspace isn't connected to a Vonage account yet, enter your API Key and API Secret and click Continue.

You'll then see the numbers already on your Vonage account. Click one to add it, or search for a new number by country and, optionally, the digits it should contain. Clicking a number from the search results buys it, which charges your Vonage account.

There's nothing more to set up on Vonage's side: the channel points the number's messages at your workspace, and if the number handles calls, creates a Vonage application so its calls reach your workspace too.

Considerations

Vonage's guide to finding your API key and secret explains the change to how secrets are shown.

To learn more about channels in general, see Introduction to Channels.