How FlexyPe Scaled OTP Delivery & Reduced Costs with Combirds

99%+

Real Time OTP Delivery

99.5%+

OTP Delivery Success Rate

12K-15K/day

Scalable OTP Throughput

40-50%

Drop in Login Failures

25-35%

Cost Optimization in Messaging

20-30%

Growth in Conversion Rates

April 07, 2026

Overview

FlexyPe, a fast-growing checkout infrastructure platform, transformed its OTP delivery performance and cost efficiency using Combirds' messaging infrastructure.

By leveraging Combirds' high-speed SMS and OTP delivery system, FlexyPe built a reliable, scalable authentication layer—powering seamless one-click checkouts for 500+ eCommerce brands.

As OTP became mission-critical for login, checkout authentication, and fraud prevention, Combirds enabled FlexyPe to scale effortlessly while maintaining speed, reliability, and cost control.

About FlexyPe

FlexyPe is a modern checkout infrastructure platform designed to improve conversion rates for eCommerce businesses through frictionless one-click checkout experiences.

The platform supports 500+ brands and handles thousands of daily authentication requests, where OTP plays a crucial role in:

Secure user login
Checkout authentication
Fraud prevention

With rapid growth, maintaining fast and reliable OTP delivery became essential to revenue and user experience.

The Challenge

As FlexyPe scaled its operations, OTP infrastructure limitations started affecting performance and costs:

High OTP Dependency: OTP was critical at the final checkout step
Increasing Traffic: Daily OTP volume scaling rapidly
Rising SMS Costs: Existing providers impacting margins
Delivery Delays: Even minor OTP delays causing checkout drop-offs
Low Reliability: Occasional failures affecting user trust
Poor Support: Lack of real-time issue resolution from previous providers

Since OTP sits at the most critical conversion point, any inefficiency directly impacted revenue.

The Solution

To overcome these challenges, FlexyPe partnered with Combirds to build a high-performance OTP and SMS delivery ecosystem designed for speed, scale, and reliability—anchored around five key pillars.

Instant delivery at critical moments.

Combirds enabled ultra-fast OTP routing, ensuring authentication messages were delivered within seconds. Even during peak traffic surges, latency remained minimal—directly improving checkout completion rates and reducing user drop-offs at the most critical stage.

Built to scale with demand.

The infrastructure was designed to handle high-volume traffic effortlessly, consistently supporting 11K–12K OTPs per day without delays or performance degradation. This ensured a smooth and uninterrupted user experience, regardless of demand spikes.

Cost efficiency through intelligent routing

By implementing smart routing mechanisms, Combirds optimized message delivery paths to reduce per-message costs. This significantly lowered overall SMS spend while improving ROI across authentication workflows.

Hands-on support and proactive monitoring

FlexyPe benefited from a dedicated support system with real-time issue resolution and continuous monitoring. This ensured faster escalations, seamless onboarding, and a smooth deployment process without operational friction.

Reliability that builds trust

With a highly dependable delivery architecture, Combirds achieved consistently high OTP success rates with near-zero failures. This strengthened platform reliability and reinforced user trust in every authentication interaction.

The Impact

🚀 Instant OTP Delivery

99%+ OTPs delivered within 3–5 seconds, reducing authentication drop-offs by 40–50%

⚡ Near-Zero OTP Failures

Achieved 99.5%+ OTP delivery success rate, minimizing failures at critical conversion stages

💸 Significant Cost Reduction

Reduced SMS costs by 25–35% through optimized routing and efficient delivery

📊 Seamless Scalability

Handled 12,000–15,000 OTPs per day with zero downtime or performance issues

📈 Improved Conversion Rates

Increased successful logins and verifications by 20–30%, boosting overall lead capture efficiency

🤝 Enhanced Support Experience

Enabled 50% faster issue resolution with dedicated account management and proactive support

Bishwajyoti Roy

Co-founder & CTO, FlexyPe

“

SMS and WhatsApp OTPs are a vital component of our system. We were experiencing occasional downtime in SMS delivery with our previous provider, which led us to switch to Combirds. The onboarding process was smooth—the Combirds team helped us set up our account and go live within a day. Overall, it has been a great experience working with Combirds.

Business Outcome

By optimizing OTP infrastructure, FlexyPe unlocked:

Higher checkout completion rates
Better customer experience at critical touchpoints
Reduced operational costs
Improved system reliability at scale

OTP transformed from a bottleneck into a growth enabler.

Conclusion

With Combirds' advanced OTP infrastructure, FlexyPe successfully transitioned to a high-performance, cost-efficient, and scalable authentication system.

For platforms where OTP directly impacts revenue, speed and reliability are non-negotiable—and Combirds delivered on both.

Looking to Scale Your OTP Infrastructure?

Whether you're handling 1,000 or 1 million OTPs per day, Combirds helps you:

Deliver OTPs instantly
Reduce messaging costs
Scale without limits

Get Started Now

Schedule a Demo

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