API Documentation

Introduction

Welcome to the EASY OTP developer reference guides. Our platform provides high-availability REST APIs designed to dispatch dynamically generated verification codes via Gmail SMTP and Carrier SMS securely.

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All services are instantly accessible upon sign-up. Get ₹5 free trial, then top up via UPI (min ₹15) and start sending OTPs.

Gmail OTP

₹0.10 per API call

SMS OTP

₹0.35 per API call

Gmail OTP API

Securely dispatch transactional OTP verification emails directly to primary inboxes. Each request dynamically styles your custom Sender Company Name on our highly deliverable SMTP servers.

POST /api/gmail/send-otp
ParameterTypeRequiredDescription
apiKeyStringYesYour Gmail Secret key
emailStringYesRecipient's valid email address
cURL 
curl -X POST https://easyotpapi.online/api/gmail/send-otp \
  -H "Content-Type: application/json" \
  -d '{"apiKey": "gmail_xxxxxxxxxxxxxxxx", "email": "user@gmail.com"}'

Response Example

Success (200 OK) 
{
  "success": true,
  "message": "Gmail OTP dispatched successfully."
}
Error (400 Bad Request) 
{
  "success": false,
  "message": "Invalid API key or email address."
}
POST /api/gmail/verify-otp
ParameterTypeRequiredDescription
apiKeyStringYesYour Gmail API key
emailStringYesRecipient's email address
otpStringYes6-digit OTP code
cURL 
curl -X POST https://easyotpapi.online/api/gmail/verify-otp \
  -H "Content-Type: application/json" \
  -d '{"apiKey": "gmail_xxxxxxxxxxxxxxxx", "email": "user@gmail.com", "otp": "592038"}'

Response Example

Success (200 OK) 
{
  "success": true,
  "message": "OTP Verified successfully."
}
Error - Invalid OTP (400) 
{
  "success": false,
  "message": "Invalid OTP code."
}
Error - Expired (400) 
{
  "success": false,
  "message": "OTP expired or session not found."
}

SMS OTP API

Dispatch verification codes through standard carrier telecommunication routes (SMS) to Indian numbers instantly. Highly compatible with legacy web services.

POST /api/sms/send-otp

Important

Send strictly 10-digit number. Do NOT add +91 prefix. Gateway appends country code automatically.

ParameterTypeRequiredDescription
apiKeyStringYesYour SMS Gateway API key
numberStringYesRecipient's 10-digit mobile number
cURL 
curl -X POST https://easyotpapi.online/api/sms/send-otp \
  -H "Content-Type: application/json" \
  -d '{"apiKey": "sms_xxxxxxxxxxxxxxxx", "number": "9693521763"}'

Response Example

Success (200 OK) 
{
  "success": true,
  "message": "SMS OTP dispatched successfully."
}
Error (400 Bad Request) 
{
  "success": false,
  "message": "Invalid API key or phone number."
}
POST /api/sms/verify-otp
ParameterTypeRequiredDescription
apiKeyStringYesYour SMS API key
numberStringYesRecipient's 10-digit mobile number
otpStringYes6-digit OTP code
cURL 
curl -X POST https://easyotpapi.online/api/sms/verify-otp \
  -H "Content-Type: application/json" \
  -d '{"apiKey": "sms_xxxxxxxxxxxxxxxx", "number": "9693521763", "otp": "194038"}'

Response Example

Success (200 OK) 
{
  "success": true,
  "message": "OTP Verified successfully."
}
Error - Invalid OTP (400) 
{
  "success": false,
  "message": "Invalid OTP code."
}
Error - Expired (400) 
{
  "success": false,
  "message": "OTP expired or session not found."
}