otp-watch
Monitor that one-time passcodes actually arrive via SMS or email
Freemium - Email checks: free. 3 free SMS checks. SMS monitors: €29/month (per monitor).
About otp-watch
otp-watch is synthetic monitoring that verifies end-to-end delivery of verification codes (OTP) sent by SMS or email. Rent a real UK phone number or get a disposable email address, trigger your app to send the code, then poll the API for a received/timeout result and latency. Designed for engineering/CI workflows to catch carrier filters, spam-folder routing, suspended sender domains or broken SMS routes before users are impacted.
Key Features
- Real rented UK phone numbers and disposable email targets for end-to-end checks
- HTTP API to create checks, poll results, and integrate with CI/alerts
- Returns delivery status ('received' with latency or 'timed_out') for accurate SLAs
- Free one-off email checks and limited free SMS checks; paid monthly SMS monitors
Who is this for?
Developers, SREs, and engineering teams who need to ensure OTP/verification messages are delivered to users (authentication/CI monitoring).
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Pricing
FreemiumEmail checks: free. 3 free SMS checks. SMS monitors: €29/month (per monitor).
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