How to test OTPs
19 Sep 2026
In this moment:
Rahul Parwal
WonderProxy
OTP testing looks simple—until real-world edge cases start breaking your authentication flow.
In my latest article for WonderProxy, I explore practical approaches to testing OTPs across SMS, email, authenticator apps, APIs, security scenarios, negative cases, and automation.
If you test authentication flows, this one is worth adding to your testing toolkit.
Rahul Parwal
Test Specialist
Rahul Parwal is a Test Specialist with expertise in testing, automation, and AI in testing. He’s an award-winning tester, and international speaker.
Want to know more, Check out testingtitbits.com
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