Bulk SMS API for Developers
Integrate SMS functionality into your website, application or business workflow using the OnlineSMS platform. An API allows compatible software systems to exchange requests and responses without requiring users to send every message manually.
- Connect SMS messaging with your own application or website.
- Automate eligible notifications and business workflows.
- Reduce repetitive manual work and data-entry errors.
- Build SMS into customer, order or service processes where supported.
OnlineSMS API Integration
Connect your business software with SMS messaging
An SMS API can help developers connect an application to a messaging service. Depending on your account and the API features enabled for it, an integration may be used for alerts, reminders, status updates or other permitted business messages.
Application Integration
Plan how your application will trigger messages, provide the required message data and handle the response returned by the service.
Workflow Automation
Connect supported messaging actions to business events such as order updates, appointment reminders or service notifications.
Secure Credential Handling
Keep API credentials on the server side, restrict access to authorised personnel and never expose secret keys in public web pages or client-side code.
Error Handling and Testing
Validate inputs, inspect API responses, log failures without recording secrets, and test integrations before enabling production traffic.
API Integration Checklist
Prepare your application before connecting to OnlineSMS
1. Request the current API documentation
Contact OnlineSMS to obtain the current endpoint, supported parameters, authentication method, request format and response codes for your account.
2. Configure credentials securely
Store credentials in server-side configuration or environment variables. Do not hard-code secrets into a public repository or browser JavaScript.
3. Validate message and recipient data
Validate phone numbers and message fields before submitting a request. Follow applicable consent, sender ID, template and telecom compliance requirements.
4. Handle responses and failures
Use the response format in the official documentation to identify success or failure. Avoid blindly retrying requests where this could create duplicate messages.
Frequently Asked Questions
OnlineSMS Developer API
What is the OnlineSMS API?
An API is a defined way for software systems to communicate. The OnlineSMS API can be used to integrate supported SMS messaging functions into compatible applications, subject to your account and the current API documentation.
Where can I get API documentation?
Contact OnlineSMS and request the current API documentation, including endpoint details, authentication requirements, supported parameters and response formats.
Can I integrate the API with my website or application?
Integration depends on your application's technology and the features supported by your OnlineSMS account. Review the official documentation and test the integration in a controlled environment before production use.
How should API credentials be protected?
Keep credentials on a trusted server, limit access, use secure configuration and rotate credentials if they are exposed. Do not place secret credentials in browser-side code.
Does API integration remove DLT requirements?
No. API integration does not replace applicable telecom, consent, sender header or content-template requirements. Confirm the relevant requirements for your message category and use case before sending messages.
Need help getting started with SMS API integration?
Contact OnlineSMS Explore Bulk SMS DLT Registration Guide