Messaging APIs built for Developers
Use our multichannel APIs to send and receive messages across SMS, WhatsApp, Email and Voice.
Our APIs provide you with a single interface for all your messaging needs, allowing you to easily connect your software with your users.
Trusted by 46,000 customers to deliver world class mobile messaging services
Get Started
Our API documentation aims to help you to quickly and effortlessly integrate Esendex’s messaging channels into your own systems, including how to start a free trial and find your API key. As messaging experts, we’re always here for questions, advice and we love to hear about how you are using our APIs!
Please use Conversations v1 API Documentation. Our new API suite is currently in early access, if you would like more information on our new APIs or how to upgrade please contact our sales team.
Sending your first message
Send messages to customers through multiple channels
Checking your message status
Get a status update on delivery for each message sent
Receiving inbound messages
Receive messages from customers to enable 2-way conversations
Checking your credit balance
Review your balance by account for each channel
Creating text templates
Create and save SMS templates to deliver consistent messaging
Our best price
From as little as
2.4p per message
Multichannel capabilities in one single setup.
Easy Integration with your software
Real-time API communication & reporting
Get started with a free trial account
Access our Developer Tools.
Sign up in 30 seconds.
No credit card required.
Existing Esendex Customers
If you became an Esendex customer before 27 July 2022, or began using our APIs before 8 November 2022, please click below for your API documentation.
Seamless integration
Our APIs act as a single point of integration for various communication channels, eliminating the complexity of dealing with multiple vendors and networks. Focus on your messages for your end-users.
We’ve got your back
Comprehensive developer resources ensure you’re never left in the dark. We offer detailed API documentation, code examples in multiple languages, guides and dedicated local support teams ready to assist you.
Reliable and secure
With high availability and ISO, Cyber Essentials, SOC2 accreditations rest assured that you are in safe hands.
Start your free trial
Discover the full power of our mobile messaging platform.
Request a demo from our expert solutions team now.
“Without Esendex’s SMS API we wouldn’t have been able to provide such a robust click-and-collect solution”
Commercial Manager – Capgemini
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