Auth Rinvo v1.0 Launched

Fast & Secure Email OTP API

Send OTP emails instantly using Auth Rinvo. A developer-first API with guaranteed inbox delivery.

99.99%
Delivery SLA
< 1.2s
Average Latency
100%
Developer Satisfaction
6-Digit
Cryptographic Security

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.

Developer Sandbox

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"}'
Auth Rinvo Dashboard (Mock)
Total Sent 14,204
Delivered 14,198
Success Rate 99.9%

Live OTP Logs

Connected
user@gmail.com OTP: 498301 Delivered
client@outlook.com OTP: 910283 Delivered
alex@company.com OTP: 156382 Rejected

Sleek 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.

₹500 one-time pack
Adds: 600 OTP Units
  • 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.

₹9,999 one-time pack
Adds: 50,000 OTP Units
  • 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

₹2,500 one-time pack
Adds: 4,500 OTP Units
  • 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