Communication APIs that Connect, Engage, and Convert

From send-in-seconds Programmable SMS, SMS Broadcast Software, and Whitelabel SMS Reseller Platform, to advanced Programmable Voice and Phone Number Verification APIs, Esendex has been helping businesses to send great customer communications for over 20 years.

Think friction-free customer, technical, 24/7 emergency support, and unbeatable pricing 20-40% lower than industry standards. We're experts at ensuring your messages get approved by carriers and delivered to your audience with ease.

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Trusted by 46,000 customers to deliver world class mobile messaging with our communication APIs and software

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Next-level API communication services: we’ve got you covered

Have natural, engaging conversations that span the customer journey, whether it’s with our quick-start platform, best in class API or flexible integration options.

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Texting API designed to send & receive SMS & MMS globally using a short code or 10DLC number.

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SMS Software

Easy to use SMS software that can send & receive SMS & MMS using a short code or 10DLC number.

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Voice Broadcast

Powerful voice API that sends mass automated phone calls quickly to mobile & landline devices.

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Phone Verification

Verify mobile & landline numbers, find service providers, & define time zones to restrict calling.

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We’re Here. So You Can Communicate Anywhere.

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Fuelling Growth with Better Communication API Messaging

As a frontrunner in the SMS space, we’ve never stood still, and continue to develop solutions that support our customers to send over 5 billion messages a year.

Click on the sections below to explore how our mobile messaging services can help you send smarter notifications, offer more collaborative support, create conversational marketing campaigns and deliver frictionless commerce.

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With an SMS delivery speed of five seconds, and messages typically opened within 90 seconds, send important information, prompts and reminders that won’t be ignored.

Take notifications to the next level using rich media such as images and videos, and be where your customers are with WhatsApp.

From automated messages and chatbots with the option to escalate to a live agent, help customers to get answers to their questions as quickly and efficiently as possible.

No more queues, tickets and frustrated staff and customers; just smart support that will make your organisation stand out from the crowd.

Get your marketing messages straight into your customers’ hands, using offers and alerts to drive action.

Take your campaigns to the next level and create compelling experiences that drive conversion using two-way chat, rich media, personalisation and more.

Add value and simplify the buying process using mobile commerce. Collect payments, provide conversational customer support at checkout or send simple sales and product preview alerts, all whilst delivering a superior customer experience.

Communication APIs Your Customers Will Thank You For

Click below to find out more about the different types of messages you can send via our business messaging services and solutions.

“We have been really impressed with how easy the text messaging service has been to use, its cost and Esendex’s customer service.”


Learn How Epilepsy Society Uses Esendex's SMS Services
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Esendex: The global leader in conversational business communication APIs and Software

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20+ years of experience

With decades of industry experience working with businesses of all sizes, we’ve got you covered. Use our quick-start platform or developer-loved APIs, or if you need something unique we can work with you to create a solution tailored to your business needs.

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Industry-leading support

We’re dedicated to helping our customers transform their business communications and meet their goals. Plus, we’re a global provider that provides 24/7 local support so you’ll always speak to a real person in your country.

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Expert partner you can trust

From global resilient routing and regulatory compliance to in-country expertise, our customers partner with us for our person-to-person support, whether that’s for our strategic, technical or channel expertise – or all three.

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One-on-one with everyone

Our direct connections to all major networks ensure you can reach anyone on the planet in seconds – via the most secure, compliant and highest-quality routes available.

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Flexible, scalable options

Choose an option that suits you, whether that’s our quick-start platform, our best-in-class API or seamless integration options. Enabling business messaging is quick and easy with Esendex.

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Solutions designed for you

If you have particular business objectives that a turnkey solution cannot meet, our Professional Services team will translate your brief into a reality.

What it’s like to partner with us…

With extensive experience across sectors, a commitment to building and maintaining strong customer relationships, and an industry leading NPS score of +49, we’re the first choice for many. Here’s what some of our customers have to say about working with us…

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Transforming Communication with SMS

Instead of a simple SMS, British Airways Holidays now use SMS Landing Pages, so customers enjoy branded, content-rich messages. They can click on links, buttons, request call-backs and more.

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A significant engagement increase to 59%, up from 44% via the previous simple SMS system.

“We can now confidently message our customers, helping us cement our brand as the trustworthy business we want to promote.”

Customer Operations Manager, BA Holidays

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Revolutionizing customer communications with reliable notifications

Thanks to our automated one-way SMS service, Ocado can quickly and easily provide customers with order and delivery updates, boosting the overall customer experience.

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“The Esendex SMS API is very impressive and was an immediate draw for us.”

“It was hassle free to setup and integrated seamlessly with our existing business applications.”

Director of Planning & Supply Chain, Ocado

"We’re really pleased with how the partnership with Esendex is going. The pricing model is good and all of our other key requirements have been met”


Learn How Liberis Used Esendex's SMS Services for Payment Reminders
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Let’s Start Sending, Together.