Home / Features / Callback URL

Callback URL

The Callback URL (webhook) feature allows you to forward incoming SMS messages to a defined URL address.

Feature Details

Callback URL function allows incoming SMS messages to be redirected to a defined URL. If the function is enabled any message coming into SMSEagle will trigger an HTTP(S) request to the remote url. The HTTP(S) request can be of type GET or POST.

Configuration

The feature allows you to create a webhook for incoming SMS/MMS. On each incoming SMS/MMS message SMSEagle will trigger HTTP(S) request to a defined URL. The “Callback URL” allows to add unlimited number of rules. Each rule can be enabled or disabled by user.

Adding/editing rules

For each new rule user has to fill in the requested fields:

  • ‘URL’ field defines remote address of your callback script
  • ‘Test URL’ button allows to test whether your Callback URL configuration is correct. SMSEagle will make a callback request with test parameters and will verify the response of remote server
  • ‘URL method’ allows to choose whether callback to your URL is done with HTTP(S) GET or POST method
  • “Send request when” defines if the request is always sent, sent only when SMS sender belongs to a given Phonebook contact/group and/or when incoming message contains a given character string
  • Optionally you can define “API key of your service” value. This will be passed to your callback URL in parameter ‘apikey’. If you leave the field blank, ‘apikey’ parameter will not be passed to your callback URL
  • User may also choose whether to enable support of self-signed SSL certificate

After sending HTTP(S) GET/POST request to your callback URL, SMSEagle will be expecting HTTP response: 200 [OK].  If other or no response is received from your callback URL, SMSEagle will keep retrying every X minutes (user defined) for 24 hours.

Get incoming SMS messages delivered straight to your system using callback URLs. Set up rules, choose how data is sent, and stay in control. SMSEagle helps you automate your SMS workflows in real time. It’s fast, reliable, and easy to manage. Start building a smarter SMS process today—no extra tools or delays.

Understand the role of callback URLs in SMS communication

If you’re managing high-volume messaging or need fast and secure integration, understanding what is a callback URL becomes essential. A callback URL, also known as a webhook, enables your systems to receive instant updates when an SMS is received on the SMSEagle device. This means you don’t need to manually monitor or fetch messages—your system gets the data the moment it arrives.

Callback URLs provide a reliable way to automate data collection or trigger actions based on incoming SMS messages. With our devices, each rule is fully configurable, giving you control over how and when data is pushed to your server.

When businesses ask what is a callback URL, they’re often looking for solutions to automate processes. With SMSEagle, setting up such automation is simple. You define your endpoint, choose your method (GET or POST), and decide under what conditions the request should be sent. The result is instant, server-level awareness that scales easily.

Improve workflow with SMS callback URL integration

Time-sensitive communication depends on immediate data handling. An SMS callback URL ensures that incoming messages are sent directly to your system the moment they’re received. This enables automated processing, logging, or even triggering secondary actions without delay.

For example, if your business depends on alerts—like system errors or delivery confirmations you can configure your callback rules so that each incoming SMS is sent to your monitoring software in real-time. With SMSEagle, each rule is customizable. You can set triggers based on phonebook groups or specific message content.

This flexibility means an SMS callback URL can do more than relay messages. It becomes a tool for integration across departments, connecting logistics, IT, customer service, and more. Thanks to self-signed SSL certificate support, even sensitive environments are covered.

What is hardware
SMS Gateway?

Find a detailed description
in the User's Manual

Real-time communication = faster reactions

A real-time SMS callback lets your system react the instant an SMS is received. No more polling. No delays. It’s ideal for applications where timing matters—like two-factor authentication, emergency alerts, or appointment confirmations.

SMSEagle sends an HTTP(S) request once a message is received, providing true push-based communication. This ensures your backend knows exactly when to act. Because you can test your URL directly from the platform, integration and troubleshooting are fast and intuitive.

A properly configured real-time SMS callback makes your entire setup more responsive. When your systems know immediately that a message has arrived, you can deliver better user experiences, faster resolutions, and improved operational efficiency.

Reliable triggers with SMS API callback

System-to-system communication often starts with a webhook. That’s where an SMS API callback comes in. It lets your application instantly receive and process SMS content based on predefined rules directly through SMSEagle’s API.

Our platform supports GET and POST methods and lets you attach an API key for added security. That way, your endpoint knows exactly where the request is coming from and can verify it before processing. The system is designed to be robust—even retrying requests automatically if your server is temporarily unavailable.

The advantage of using an SMS API callback is that it minimizes downtime and manual effort. It’s scalable, works across various use cases, and brings predictability to your integrations. It’s ideal for IT teams, SaaS tools, or service monitoring environments.

Enable smart automation with automated SMS response URL

Want to build a fully automated system? An automated SMS response URL helps your software respond to messages in real-time. Once a message hits your SMSEagle gateway, it’s forwarded to your URL, which can return a predefined response or trigger an external process.

This is especially useful in support, healthcare, logistics, or IoT environments. For example, your system can automatically respond with instructions, generate alerts, or update records. You only need to configure the rules once, and then your automation will handle the rest.

The benefit of an automated SMS response URL lies in its simplicity. There’s no need for complicated infrastructure. SMSEagle delivers the message, your server processes it, and that’s it. It’s fast, secure, and highly adaptable.

Scalable notification system with callback URL for SMS notifications

Need a smarter way to manage alerts? A callback URL for SMS notifications ensures that all incoming messages are instantly forwarded to your server for processing. This is a game-changer for operations, especially when uptime and real-time alerts are crucial.

Whether you’re handling internal system errors or customer inquiries, this setup helps you capture and act on messages right away. You can define conditions for when the callback is triggered—like sender group or specific text—which reduces noise and focuses your attention on what matters.

A callback URL for SMS notifications turns your device into a smart endpoint in your communication flow. It’s not just a message receiver—it’s a real-time, rule-based processing tool that evolves with your business.

Why choose SMSEagle for your callback needs?

Not all callback solutions are created equal. SMSEagle combines hardware reliability with software flexibility, making it a trusted choice for businesses that need more control over their SMS systems. With direct cellular network access—no third-party services—your data stays local and secure.

You’re not just setting up callbacks. You’re building a communication workflow that’s immediate, reliable, and fully customizable. And because we support unlimited callback rules and easy API integration, our solution grows with your business.

Ready to turn SMS messages into real-time triggers? SMSEagle gives you the tools to make it happen.