Powerful API With Communication Abilities Right From the SIPBlue App

Get reliable, high-quality communications straight from your app using our powerful communication APIs. Explore everything we have to offer and become a customer to see what we’re all about.


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 our own 

tier-1 carrier network. (yep, even the phone numbers are ours)

Voice API

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

Messaging API

QuestBlue messaging APIs let you build SMS, MMS, 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.

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.

what you get

Get in front of SMS blocking and call quality

Direct-to-carrier pricing

Real human support is always included

Unparalleled flexibility

Frequently Asked Questions

Communication APIs are APIs that give businesses the ability to embed voice calling, text messaging and other communications functionality into a software application or product. From a developer standpoint, APIs are important because they allow capabilities of a specific program to be used interchangeably with another, meaning these programs are able to communicate.

Communication APIs are built for the communication space, and were brought on after the development and deployment of Communications-Platform-as-a-Service (CPaaS), allowing enterprises to achieve seamless communications across a plethora of different channels. Built to serve as a type of liaison between an application and a database, Communication APIs help businesses leverage data securely and with ease.

There are many different types of APIs that can be integrated into software, even existing software, so businesses can adopt as many as they want with ease. Some of the most common types of communication APIs include:

  • SMS APIs
    • SMS APIs let businesses easily integrate SMS text functions into an application and offer a variety of features that allow customers to access emojis, pictures, audio, long message support, PIN codes, notifications and more.
  • MMS APIs
    • MMS APIs let businesses easily integrate MMS text functions into an application and offer customers the ability to send video or picture messages, and can even be used for group messaging.
  • Voice Calling APIs
    • Voice Calling APIs let businesses easily integrate voice functions into an application, including automated and controlled call routing, conference calling, call recording, text-to-speech and more.
    • REST APIs are utilized to send and receive phone calls and text messages, along with managing phone number operations.
  • Emergency Calling APIs
    • Emergency Calling APIs let businesses empower their users to contact emergency services how and where they want, giving them peace of mind and preparedness for when disaster strikes.

Communication APIs provide businesses with the cutting-edge platforms and programs needed to stay up to date in our vastly growing world of technology. CPaaS, in general, is quickly evolving into the enterprise space for businesses who want to take control of their communication platforms. Communication APIs are a cost-effective way of allowing extensive communications internally and externally, increasing productivity, efficiency, and collaboration, while keeping integration pains at a minimum.

Finding APIs can be a small challenge, because not all APIs are created equal. Help from tools such as API directories are preferred, because they market APIs from the providers site, and help developers see which will be the best match for their system. If you are starting from scratch with building out your businesses APIs, you can find directories, like that of ProgrammableWeb, and choose which provider you think would best fit your needs. If you have a provider already, integrating new APIs will not be a challenge, just contact your current support team.

Communication APIs are moving businesses forward in markets they never thought possible. Due to APIs allowing computer programs to interchange capabilities and communicate with one another, businesses are able to grow like never before. Communication APIs are driving new waves of innovation and transforming business processes.

APIs became more popular and development took off after the release of the iPhone, and other smart devices soon followed. This meant that businesses needed to allow their end users the ability to easily access information and data through the applications, not just via the internet.

QuestBlue operates one of the world’s most biggest direct-connected network, enabling voice, messaging, emergency services, and phone numbers to be integrated seamlessly for our customers. Our Communications APIs are used by developers to integrate voice and messaging capabilities into applications and call centers trying to better manage their calling infrastructure. Try out our free APIs today and see how they can help you solve your business challenges.

QuestBlue has piloted communication software ensuring that you are in control of what is most important to you. Our global network is built to accommodate your increasing needs, growing as you do. Integrated voice calling, text messaging, and other features allows you to work more efficiently for your customers.
Our  API Platform makes using APIs even easier. Our fully-featured user interface lets anyone with web development skills create voice and messaging applications, and our platform includes a load of helpful how-to guides, sample code, and API help libraries to get you started.

QuestBlue makes it easy to get started with our APIs. Your own web developers can do the job, even if they know nothing about telecom. Incorporating voice and messaging is a lot like writing a web application. Plus, there’s no costly capital investment in hardware or specialized telecom equipment, so there’s no need to manage assets, patches, security, or anything else. You can leverage your telecom provider’s cloud hosting and hardware expertise.

Overall, your customers will love the convenience and personalization when you use automated messages to remind them about appointments or service updates. And when you integrate texting and voice calls, you will be free to focus more on customers and less on data entry, so you can increase your value gains and productivity at the same time.

Not Sure Where to Begin?

Get started today with a free trial. Demo our products and services and see how we value our customers. 

Still unsure? Reach out directly!


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