Communication APIs

Add powerful communications capabilities to your app from the only API platform with a tier-1 carrier network.

Carrier-direct voice + the most robust messaging API offering on the market

Build apps that send messages, make calls, and even save lives, without any clunky telecom infrastructure—all built on and powered by the tier-1 carrier network.

Voice API

Embed flexible, scalable voice calling into your application with more accurate, 6-second billing, all backed by our global network.

Messaging API

SVB messaging APIs let you build SMS, MMS, and Toll-Free Texting into products and applications.

Emergency Calling API

Embed more accurate public safety access directly into your app or software with our Emergency Calling API.

WebRTC Calling API

Add in-browser calling without the need for clunky infrastructure, helping you connect easier.

Authentication API

Multi-factor authentication that’s simple, secure, and ultra-customizable.

Communication APIs that deliver
real business value

Our carrier roots give customers meaningful benefits, like greater insight to messaging deliverability, higher quality calls, and a no-middleman pricing structure that saves you money.

Get in front of SMS blocking and call quality

Get access to powerful insights and take action against quality-impacting issues with our carrier-exclusive connections.

Direct-to-carrier pricing

You shouldn’t have to sacrifice scale on your API provider’s behalf thanks to phone number fees. By working with SVB, you’re working with the API platform AND the carrier.

Real human support is always included

You won’t have to pay extra to talk to a human if you need help—even if it’s in the middle of the night, during a hurricane, or on Christmas Eve.

Unparalleled flexibility

Every single function of the SVB platform, from ordering a phone number to making an emergency call, can be integrated into your application or software via API.


No other provider offered the same level of hands-on support or cost savings that SVB has been able to deliver. Their flexible APIs made it simple for us to get up and running without missing a beat.


Common Use Cases

  • Text alerts and notifications
  • Click-to-call
  • SMS surveys
  • SMS marketing
  • Call tracking
  • IVR system

We’re ready for any kind of big idea

We’ve scaled our platform to accommodate tens of millions of messages in a single day, and with coverage and industry experience that spans the globe, we’ll help you build and scale your idea no matter what, or where, it takes you.

Ready to take the APIs for a spin?

Build your prototype, scope a quick switch from a previous API platform, or get your industry questions answered from one of our pros.