Effortless messaging with a reliable SMS API gateway

What is an SMS API gateway?

An SMS API gateway allows software applications to send and receive SMS messages via programmable interfaces. By integrating SMS functionalities directly into your systems, you gain robust, automated, and scalable communication with your audience for notifications, marketing, alerts, or authentication.

Benefits of using an SMS API gateway

• Seamless integration: Connect with your CRM, ERP, website, or custom apps using simple RESTful or HTTP APIs.
• Scalable messaging: Send thousands of messages instantly, without manual effort.
• Automation: Trigger SMS/WhatsApp notifications for transactions, reminders, or OTPs automatically.
• Rich analytics: Track delivery status and open rates for better campaign optimization.
• Secure two-way messaging: Receive replies with Virtual SMS numbers for full conversations.
• European reliability: Data managed by a Belgian-based provider, trusted since 2004.

How does it work?

The SMS API gateway is a middleware between your application and mobile networks. Developers use RESTful endpoints to send, receive, and monitor SMS/WhatsApp traffic. Our API offers endpoints for sending single or bulk SMS, delivery reports, managing contacts, OTP validation, and more. The API is compatible with any modern programming language—see our sample code library in PHP, Python, or Powershell: Full API documentation.

Key features of Smstools SMS API gateway

• Bulk SMS sending: Send campaigns or notifications to groups instantly. Bulk SMS
• OTP via SMS: Secure logins and quick two-factor authentication. OTP SMS
• WhatsApp newsletter: Automate messaging on another major channel. WhatsApp newsletter
• Email to SMS: Use your regular email client to send SMS. Email 2 SMS
• Virtual SMS numbers: Enable two-way communication for support and engagement. Virtual SMS number
• Automation with Make.com and Zapier: No-code connectivity for any workflow. Make.com / Zapier
• White-label: Use your own branding, ideal for agencies. White-label SMS

Security and reliability you can trust

Your messages are routed securely to European operators, with guaranteed delivery speed and real-time error handling. Our team has supported European businesses since 2004, delivering robust uptime and GDPR-compliant processes.

Popular use cases for SMS API integration

• Marketing and promotions: Personalized SMS and WhatsApp marketing. SMS marketing, WhatsApp marketing
• Appointment reminders
• Order and shipment notifications
• Automated birthday SMS greetings Birthday SMS marketing
• User authentication (OTP)
• Bulk alerts for schools, communities, and events

Simple setup and integration

1. Create your free trial: Register and obtain your API credentials. REGISTER
2. Connect your application: Use sample code from our documentation for rapid setup.
3. Go live: Start sending SMS or WhatsApp messages from your app within minutes.

Why choose Smstools for your SMS API gateway?

• Proven track record for European businesses
• Friendly local support in multiple languages
• Transparent pricing – pay per message with no unwanted contracts
• Advanced reporting and analytics dashboard
• Multiple channels: SMS, WhatsApp, voice, and email2SMS

Frequently asked questions about SMS API gateways

• How quickly can I integrate the Smstools SMS API?
  You can get started within minutes using our step-by-step documentation and code samples.
• Do you support bulk SMS via API?
  Yes, our API is designed for efficient bulk sends, marketing, and notifications.
• Can I receive incoming SMS via API?
  With a virtual SMS number, you can process inbound SMS for customer support.
• Can I automate my workflows?
  Yes, integrate with platforms like Make.com or Zapier to automatically send SMS from your CRM, webshop, or helpdesk.
• Is WhatsApp supported?
  Yes, you can trigger WhatsApp newsletters and messages via the API gateway.

Ready to transform your communications? Start a free trial today and experience seamless messaging for your business in Europe.