# OTP SMS vs Email OTP | VeloBotix

> When to use OTP SMS versus email OTP for verification in Sri Lankan apps.

Source: https://www.velobotix.app/resources/comparisons/otp-sms-vs-email-otp

2026-08-26

# OTP SMS vs email OTP

## When SMS OTP fits

SMS OTP reaches users who may not open email quickly — common for login, checkout and high-risk actions on mobile-first Sri Lankan audiences. Generate the code in your app; VeloBotix delivers the SMS.

## When email OTP fits

Email can be cheaper for low-urgency verification and works when the user is already in an inbox workflow. It is slower and less reliable on mobile for time-sensitive OTPs.

## Implementation note

Store a hash of the OTP with a short TTL, rate-limit sends, and use a registered Sender ID. See OTP SMS and /docs/otp for integration patterns.

[SMS gateway](https://www.velobotix.app/sms-gateway-sri-lanka) · [Contact](https://www.velobotix.app/contact)