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Low cost SMS API for developers

Pay only for delivered messages

Lowest cost per delivered text

Free account, with 50 free test credits

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If you send SMS, you're probably paying for undelivered messages.

Most SMS API companies charge for these. We think it's time this changed... At The SMS Works, we only bill you for delivered messages. It's a fairer and more transparent way of working.

We hope you agree.

Check out the API  

Why choose our SMS API?

With so many SMS API providers to choose from, how do you decide which one is right for your business?

This 1 minute video exposes a 20 year-old SMS industry practice that most companies aren't aware of.

Copy & paste API snippets

We’ve put together a comprehensive range of ready to go scripts in the most common languages. Simply copy and paste.

Whatever your preferred language, our goal is to make your SMS integration as fast and simple as possible.

Our SMS gateway documentation is concise, clear and packed with helpful advice and sample code. Your test account comes with 50 free test credits.

 SMS API Developer Zone

Remarkably low prices

Our SMS API prices are amongst the lowest in the UK, with messages starting at 1.45 pence + VAT per text with our credit doubling offer. Compare prices with other SMS Gateway companies with our price comparison table.

On average, our customers save over 30%.

For high SMS volume customers sending over 50,000 texts a month, we offer even lower rates. SMS credits can be purchased by card, PayPal or BACS transfer.


Reliable Tier 1 connections

We only use the most reliable tier one connections, direct to UK networks. Messages sent within the UK stay in the UK.

We never use international or SMS grey routes. Although low-grade, grey routes may seem like a great, low-cost SMS option, they are notoriously unreliable.

Learn more about SMS grey routes and why you should avoid them.

Fast, reliable, robust

We've invested heavily to make our SMS API as reliable as it can possibly be. Our platform has been built to withstand the rigours of the most demanding applications.

We understand that data protection and security are crucial to you. We've gone the extra mile to ensure that our platform exceeds all the data protection requirements under GDPR.

 Technical Overview

Only pay for delivered messages

We only charge you for delivered messages. Failed texts are credited straight back to your account.

Almost all SMS companies charge for failed texts, when they haven't been charged themselves. You can save you as much as 18% by not paying for undelivered texts.

Our delivery reports give you a detailed outcome of all texts sent, including refunded SMS credits.

No nasty surprises

Your test account comes with 50 free credits, so that you can be absolutely sure that our service is right for you.

We won't tie you in with contracts or minimum SMS volumes. We run a simple, pay-as-you-go, SMS Gateway service.

Our aim is to make integrating with our SMS service as fast and frictionless as possible.

Credits don't expire

Once you've bought SMS credits from us, they won't expire. Surprisingly, some SMS providers remove your credits if they haven't been used after 12 months.

Current credit levels can be checked at any time, using our simple delivery reporting tools.

 Set up a free account

Changing SMS API provider is not an appealing prospect for most.

There are additional costs in integrating with the new supplier and there is always a danger that the new company doesn’t perform as expected. We understand these concerns and wanted to try and put a couple of fears to bed and explain why the benefits outweigh the risks.

Fear 1: Time taken for SMS integration

In our experience, this is never as bad as feared. Most SMS API companies have similar approaches and often the code changes required are quite modest. Our copy and paste code snippets go a long way to simplifying the process and we’re always on hand to help out if needed.

Fear 2: Reliability

Customers tell us that above everything else, reliability is the single most important factor. We really understand this and we’ve put in the work to make sure that everything’s in place to provide a rock-solid and secure SMS gateway. For a quick summary, take a look at our technical overview.

The SMS Works offers a fairer approach to pricing

Paying for undelivered texts when your existing provider doesn’t, isn’t a very open way of operating. By looking at your SMS delivery reports you’ll be able to see how much you’re currently spending on failed texts.

Over the course of a year, it’s likely to be a reasonable amount. Our delivered only pricing means you only pay for what’s delivered so there zero wastage.

Ready to test us?

Set up a free SMS account and we’ll be on hand to help if you need us.