How Respond.io Brought Voice into its Customer Conversation Platform with Telnyx

When respond.io set out to bring voice to its customer conversation platform, it wasn't about adding another communication channel. It was about making voice feel native to the way businesses already talk to their customers.

Headquartered in Kuala Lumpur, Malaysia, respond.io helps more than 10,000 businesses across 180+ countries manage customer conversations from one platform. As customers increasingly expected to move between messaging and voice without losing context, respond.io needed calling capabilities that felt like a natural extension of the product, not a bolt-on.

Delivering that experience required infrastructure with global reach, reliable performance, and a developer experience that could support respond.io's vision. That's where the partnership with Telnyx began.

When conversations break across channels, context gets lost

Through customer conversations, respond.io saw a common challenge: conversations rarely stayed on a single channel. A customer might start with a message, receive an SMS update, then move to a phone call to complete a purchase or resolve an issue. When those interactions happened across disconnected tools, businesses lost valuable context and customers were forced to repeat themselves.

Adding voice was about keeping those conversations connected. Rather than treating calling as a separate product, the goal was to make it a natural part of the platform, giving businesses a single place to manage customer interactions across messaging and voice.

As the platform grew, AI became an increasingly important part of that vision. Bringing voice, messaging, and AI together created opportunities for businesses to respond faster, automate routine interactions, and provide better customer experiences without losing context along the way.

Building that experience, however, required the right communications infrastructure.

Building on the right foundation

As respond.io prepared to bring voice to its platform, choosing the right communications infrastructure became a critical decision. The team evaluated providers on more than technical capabilities alone. Global reach, network quality, developer experience, and the ability to work collaboratively throughout implementation were all important considerations.

For respond.io, the infrastructure partner needed to support the same reliability and operational efficiency the company aimed to deliver to its own customers.

Telnyx stood out for its global network, communications infrastructure, and developer-friendly APIs. But beyond the technology, the partnership itself made the difference.

As Ahmed Nassar, Head of Strategy & Operations at respond.io, explains, "The team engaged as a real partner with us instead of just a normal vendor."

That approach laid the foundation for the implementation that followed.

Turning voice into a native experience

Choosing Telnyx was only the beginning. The next step was integrating voice in a way that felt like a natural extension of the respond.io platform rather than a separate product.

The engineering teams worked closely throughout the integration, with direct access to technical experts whenever questions arose. Instead of a traditional vendor relationship, the collaboration was hands-on from the start, helping respond.io move through implementation efficiently and resolve challenges as they came up.

Reflecting on the experience, Ahmed said, "The implementation was collaborative and pragmatic. The Telnyx team was very responsive and technically competent. They worked alongside our engineers rather than handing us documentation and stepping away. Whenever questions came up, we had direct access to the people who could actually help us resolve them quickly."

That collaboration extended beyond scheduled meetings. The teams worked together through a shared Slack channel and regular calls, enabling respond.io to move quickly while continuing to build for its customers.

Today, respond.io integrates Telnyx Voice API, Phone Numbers, and Messaging into its platform, enabling businesses to manage messaging and voice conversations from a single interface.

Growing with customer demand

As voice became part of the respond.io platform, customer adoption grew quickly.

In the first two months after launch, respond.io recorded around 1,000 monthly incoming and outgoing call events. Six months later, that number had grown to approximately 10,000 monthly call events. Within ten months, the platform was handling more than 40,000 monthly call events across its customer base.

The growth reflected increasing demand for businesses to manage messaging and voice from a single platform. Rather than switching between separate tools, teams could communicate with customers across multiple channels while maintaining context throughout the conversation.

The impact extended beyond platform adoption. One European travel agency using respond.io reported a tenfold increase in sales after combining chat, voice, and AI. For businesses using the platform, bringing these channels together meant fewer disconnected tools and a more connected customer experience.

Building Toward What's Next

For respond.io, bringing voice into the platform was an important step toward a broader vision: giving businesses a single place to manage customer conversations, regardless of channel.

As AI becomes a bigger part of customer communications, the company sees an opportunity to build more connected experiences across messaging and voice. Rather than treating channels independently, the focus is on helping businesses maintain context throughout every customer interaction while using AI to automate routine conversations and support their teams more effectively.

That vision extends to the partnership with Telnyx. Beyond powering voice today, respond.io sees opportunities to continue building on Telnyx's communications infrastructure as the platform evolves and customer expectations continue to change.

As Ahmed puts it, "We're fortunate enough to have several partners who meet this in our ecosystem and Telnyx is definitely one of them for our voice and SMS solutions. They're engaged, technically strong, and aligned with where we are taking the platform."

As customer conversations continue to evolve, respond.io and Telnyx are working together to help businesses deliver connected experiences across messaging, voice, and AI from a single platform.r