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SMS verification with retry logic and voice fallback

By Twilio

  • Verify
  • Twilio
  • Quick Deploy
  • Applications

Adding a retry buffer to your phone verification or authentication workflow can prevent:

  • Accidentally spamming a user with repeated text messages
  • Hitting API rate limits
  • SMS pumping or unnecessary spend

This project includes several user interface and user experience best practices for a verification workflow, incorporating the Twilio Verify API and the Twilio Lookup API. Learn more in the blog post: Best practices for managing retry logic with SMS 2FA.

If you prefer to test the Verify API channels for one-time passcodes (SMS, voice, and email), including message translations, you can check out the One-Time Passcode Verification (OTP) code exchange project.

SMS Verification Retry

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