---
title: Does the OTP route vary between Transactional and Promotional SMS?
description: "Yes, OTP (One-Time Password) delivery uses a dedicated Transactional route, not Promotional. Transactional SMS, including OTPs, are sent via high-priority channels for instant delivery, available 24/7, and exempt from DND restrictions (e.g., \"Your OTP is 123456 -SMSGAT\"). Promotional SMS, restricted…"
url: "https://www.smsgatewaycenter.com/blog/kb/does-the-otp-route-vary-between-transactional-and-promotional-sms/"
updated: "2025-02-25"
category: Bulk SMS / General
---

# Does the OTP route vary between Transactional and Promotional SMS?

Yes, OTP (One-Time Password) delivery uses a dedicated Transactional route, not Promotional. Transactional SMS, including OTPs, are sent via high-priority channels for instant delivery, available 24/7, and exempt from DND restrictions (e.g., "Your OTP is 123456 -SMSGAT"). Promotional SMS, restricted to 9 AM - 9 PM and blocked for DND numbers, aren’t suitable for OTPs due to delays and compliance rules. SMSGatewayCenter ensures your OTPs reach fast via our Transactional **[SMS gateway](https://www.smsgatewaycenter.com)**.

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