---
title: What is meant by Transactional SMS?
description: "**[Transactional SMS](https://www.smsgatewaycenter.com/transactional-sms/)** are critical, non-marketing messages sent for essential updates, like OTPs or delivery notifications (e.g., \"Your OTP is 789123 -SMSGAT\"). Available 24/7 with alpha sender IDs, they bypass DND restrictions for instant delivery. Businesses rely on them for security…"
url: "https://www.smsgatewaycenter.com/blog/kb/what-is-meant-by-transactional-sms/"
updated: "2025-02-25"
category: Bulk SMS
---

# What is meant by Transactional SMS?

**[Transactional SMS](https://www.smsgatewaycenter.com/transactional-sms/)** are critical, non-marketing messages sent for essential updates, like OTPs or delivery notifications (e.g., "Your OTP is 789123 -SMSGAT"). Available 24/7 with alpha sender IDs, they bypass DND restrictions for instant delivery. Businesses rely on them for security and service. Explore more on our [SMS Types page](https://www.smsgatewaycenter.com/sms-types/).

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