GET /api/health
POST /api/send-otp
{
"email": "user@example.com",
"user_name": "John Doe"
}POST /api/verify-otp
{
"email": "user@example.com",
"otp": "123456"
}POST /api/send-notification
{
"email": "user@example.com",
"title": "Notification Title",
"message": "Your notification message",
"user_name": "John Doe"
}POST /api/send-welcome
{
"email": "user@example.com",
"user_name": "John Doe"
}