At WhySMS, we provide powerful, developer-friendly APIs that allow you to send messages, automate workflows, and track delivery—without writing complex code or relying on outdated systems.
An SMS API (Application Programming Interface) allows your software, website, or app to send and receive text messages automatically using a secure connection to an SMS gateway.
With WhySMS, developers can easily plug in our API and start sending OTPs, alerts, reminders, or marketing campaigns in minutes.
✅ OTP Verification
Instantly send one-time passwords for user logins, payments, or identity checks.
✅ Order & Delivery Notifications
Keep your customers updated on their purchases and delivery status with automated SMS.
✅ Appointment Reminders
Reduce no-shows by automatically sending reminders for bookings, medical visits, or meetings.
✅ Real-Time Alerts
Trigger system or transactional alerts directly from your platform—instantly and reliably.
✅ Promotional Campaigns
Launch flash deals, discounts, and announcements straight from your CRM or ERP via API.
🔐 Secure & Token-Based Authentication
🔁 Webhook Support for Real-Time DLRs
⚙️ Support for WhatsApp & Voice OTP Integration
📊 Accurate Delivery Reports with Timestamps
🔄 Auto-retry & Queueing for Failed Messages
Our API is designed for scalability, whether you're sending 10 messages or 1 million.
🛒 E-commerce
🏦 FinTech
🏥 Healthcare
🚚 Logistics
🏫 Education
📱 SaaS Platforms
Manual messaging is a thing of the past. With WhySMS API, you can:
Save time
Reduce human error
Improve customer satisfaction
Ensure compliance with telecom regulations
Your competitors are automating. So should you.
With WhySMS API, you’re not just sending messages—you’re building trust, loyalty, and real-time communication.