Fast & Secure Email OTP API
Send OTP emails instantly using Auth Rinvo. A developer-first API with guaranteed inbox delivery.
Everything you need for seamless OTP delivery
Stop managing mail servers. Deliver secure single-use codes directly into the user's inbox in milliseconds.
Guaranteed Instant Delivery
Powered by premium delivery infrastructure. Emails arrive in the primary inbox, completely bypassing the spam folder.
Cryptographically Secure
Generate secure 6-digit OTPs that are verified on-demand. Rate-limited at the key level to block brute-force attempts.
Developer First API
Authenticate via a simple Bearer token and post a single JSON payload. Ready for any framework or language.
Complete Audit Logs
Track every OTP sent. Monitor delivery status: Sent, Delivered, and Rejected in real time.
Granular API Controls
Create multiple API keys for development, staging, or production. Adjust and approve quotas on the fly.
Scale with Confidence
Start free and scale seamlessly to millions of emails without upgrading servers or worrying about mail configurations.
Send OTPs in 2 Lines of Code
Our endpoint is simple, fast, and secure. Pass the authorization header, declare the destination email, and we will handle the rest instantly.
curl -X POST "https://auth.rinvotech.in/api/send-otp" \
-H "Authorization: Bearer CLIENT_API_KEY" \
-H "Content-Type: application/json" \
-d '{"email": "user@example.com"}'
fetch('https://auth.rinvotech.in/api/send-otp', {
method: 'POST',
headers: {
'Authorization': 'Bearer CLIENT_API_KEY',
'Content-Type': 'application/json'
},
body: JSON.stringify({ email: 'user@example.com' })
})
.then(res => res.json())
.then(data => console.log(data));
use Illuminate\Support\Facades\Http;
$response = Http::withToken('CLIENT_API_KEY')
->post('https://auth.rinvotech.in/api/send-otp', [
'email' => 'user@example.com'
]);
return $response->json();
import requests
url = "https://auth.rinvotech.in/api/send-otp"
headers = {
"Authorization": "Bearer CLIENT_API_KEY",
"Content-Type": "application/json"
}
payload = {
"email": "user@example.com"
}
response = requests.post(url, json=payload, headers=headers)
print(response.json())
Live OTP Logs
ConnectedSleek pricing that scales with your growth
No credit card required to start. Instantly test our service with 20 free OTP credits.
Pro Pack
Perfect for growing businesses, startups and production apps.
- 600 OTP Credits (Pieces)
- No monthly expiration
- Instant delivery SLA
- Detailed analytics dashboard
- 7-day logs retention
- Priority email support
Enterprise Pack
Designed for high volume email requirements and global apps.
- 50K OTP Credits (Pieces)
- No monthly expiration
- Dedicated IP pools support
- Full log retention & exports
- 30-day logs retention
- 24/7 phone & Slack support
Mid Plan
Esay To Grow Your Bussiness For Rinvo Auth
- 600 OTP Credits (Pieces)
- No monthly expiration
- Instant delivery SLA
- Detailed analytics dashboard
- 7-day logs retention
- Priority email support
Frequently Asked Questions
Got questions? We have got the answers. Reach out to our support for more information.
What is Auth Rinvo?
Auth Rinvo is a micro-SaaS platform providing secure and fast Email OTP dispatching APIs. It generates 6-digit verification codes and delivers them to the user via premium deliverability.
How does Auth Rinvo benefit me?
Auth Rinvo has industry-leading deliverability rates, ensuring your transactional emails don't hit the spam folder. You get top-tier delivery infrastructure without configuring DKIM, SPF, or dealing with SMTP keys.
How do I generate an API Key?
Sign up, click "API Keys" on your client dashboard, and click "Request API Key". An administrator will instantly review your request, approve it, and generate the API token for you.
How do I top up my credit balance?
Yes! You can purchase a credit pack on the billing dashboard at any time to top up your balance. Your credits have lifetime validity. Administrators can also manually adjust or top up client OTP balances on demand.
Secure your user authentications today
Integrate our single endpoint in less than 5 minutes. Guaranteed deliverability, complete audit trail, and zero mail configurations needed.
Create Free Account