This helps prevent: Accidentally spamming a user with repeated philippines whatsapp number text messages Reaching API rate limits Pricing fraud or unnecessary spending The best practices in this post are written for the Twilio Verify API , but many of them apply regardless of your 2FA provider. Combined with other best practices, such as creating an allowlist of country codes to verify, these steps can help ensure your user verification workflow is as smooth as possible. Launch a demo application with SMS retry best practices This project is also available for Quick Deploy on Twilio Code Exchange , and no code is required! I built an application that demonstrates the best practices described in this post.\
The application is quick to launch since it is built with Twilio Functions , Twilio's serverless environment. You can launch your own by following these instructions. The prerequisites are as follows: Node.js A free Twilio account (sign up for free with this link and get a $10 credit when you upgrade your account) A Verify service Create one in the Twilio console . Clone or download the sample project on my GitHub : Bash Copy the code git clone && cd verify-retry Install the dependencies with npm install. Then rename the file .