Consider how many OTPs (One-Time Passwords) you need to send regularly. Some OTP SMS pricing plans offer discounts for higher volumes, so choose one that matches your usage.
If your user base is international, check if the OTP SMS service price includes international OTP delivery or if there are additional charges for sending OTPs to different countries.
Ensure that the OTP SMS service offers robust security measures to protect your messages and user data. Sometimes, higher-priced plans provide enhanced security features.
Look for OTP service providers with a reputation for reliability and high uptime. Downtime can disrupt your operations and affect user experience.
Evaluate the quality and availability of customer support. Prompt assistance can be crucial in case of issues or questions.
Consider whether the OTP SMS pricing plan allows for scalability. As your business grows, you might need to send more OTPs, so choose a plan that can accommodate expansion.