Mobile messaging including SMS for software companies

Powerful integrations designed to drive customer engagement, business growth and revenue across mobile messaging, including SMS, WhatsApp, RCS and more.

Trusted by the software space to deliver world class mobile messaging solutions
Capgemini logo
Clan William Group logo

Helping software companies deliver more enriching customer experiences

For 20+ years, Esendex has been helping businesses in the software space enhance their solution offering with market-leading mobile messaging technology. Thanks to our scalable, reliable, lightweight API, you can easily and quickly integrate SMS, WhatsApp or RCS messaging into your existing website, app or software.

With just one connection, we can get you up and benefiting from business messaging capabilities, from improving your customer engagement and growing your client base to developing a new revenue stream.

Why choose Esendex?

Looking to enhance your communications strategy with business messaging? Or do you want to add value to your existing products with business messaging and open up new revenue streams? Whatever your goals, here’s why you should choose us.

Customer Satisfaction

Trusted by the software sector

With 20+ years of experience working with businesses in the software industry across the globe, we’re a partner you can trust. We strive to get to know your business and its unique requirements, tailoring a solution that’s best for you.

Quick & easy to integrate

Integrate our API into your software and be ready to activate message sending capabilities within minutes. 
Use our swagger formatted developers’ documentation to guide you through a seamless API integration.

Global presence, local support

We’re a global provider who can provide expert local support. Not only will you benefit from the ability to speak to someone based in the UK 24/7, we will ensure there’s no disruption to the service you offer to your customers and the revenue which flows from it.

Global, scalable messaging

Use the Esendex platform to unlock your potential and offer business messaging to customers with an international footprint. And as your messaging volume grows, our platform will grow with you.

Multichannel API

Be equipped to offer SMS, WhatsApp or RCS messages to your customers with just one API. Maximise your potential to satisfy multiple use cases and grow your customer base. Find out more about our SMS API here.


A new revenue stream

With business messaging, you can add value to your product and open up a new revenue stream. So whether you want to maximise your profit from messaging or enhance the services you offer to boost customer loyalty, it’s revenue you can rely on.

Developer? Come and play with our API.

We can help you discover the art of the possible

With mobile messaging, you can help your customers deliver more memorable engagements and take customer experience to new heights. Here’s how we’ve helped businesses like yours…

Improving SMS management

Topping up SMS balances is laborious and costly. Thanks to the new branded online system built bespoke for the group by Esendex, Clanwilliam Group could automate the SMS top-up process, free up their telephone lines and more.

Stepping into the future of retail

When Capgemini were approached by a major high street retailer to launch their new click-and-collect service, they turned to the Esendex SMS API.

Gaining an extra comms channel and meeting customer needs

To meet customer needs, Spotler wanted to introduce SMS as a comms channel. Esendex was chosen, thanks to our robust infrastructure, integration capabilities and quality support.

Want to partner with us?

Using our API, offer messaging capabilities to your customers via your own software, using our technology and expertise to transform your customer experience.

We will help you manage all your customer facing and back office functions, and you can:

  • Enjoy a share of the revenue or forgo the commission and pass the benefit onto your customers.
  • Rely on us to manage your customer relationship, from billing to account management.
  • Allow your customers to buy message credits from Esendex upfront or be invoiced monthly.
  • Lean on our support team and their expertise.

Maintain total control over the customer relationship, pricing and billing responsibilities.

  • Set your own prices and remain in control of the profit you make.
  • Using a system of sub-accounts, you will be in total control of monitoring your customers’ message send volumes, message credit allocation and billing.
  • Buy message credits upfront to allocate to your customers’ accounts or be invoiced monthly.
  • Rely on our support team – if you ever need it.

Get more out of SMS

two way chat

VMNs & shortcodes

For your customers to receive SMS and have two-way SMS Chat conversations, Esendex can provide either an 11 digit Virtual Mobile Number, or a more memorable 5 digit Short Code.

Mobile landing pages

Accessed from a link in a SMS message, mobile landing pages are interactive, designed to match a brand’s identity and offer the same experience as a mobile app or web page.

Managed services

Mobile journeys

Enable your customers to provide branded app like experiences, with no download required. Promote products, gather feedback, take payments and more, all via mobile.


Create and send personalised SMS Surveys from our API. Includes surveys where recipients receive different questions, depending on their previous response.

Let’s start sending, together.

Discover the full power of our mobile messaging platform.