> ## Documentation Index
> Fetch the complete documentation index at: https://moengage-unity-sdk-initialization-split.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Introduction to SMS

> Get started with SMS in MoEngage. Understand transactional vs. promotional message types, compliance basics, and how to reach users effectively.

Short Message Service (SMS) is a widely used channel that allows brands to send text messages directly to users' mobile devices. As a prevalent form of communication, SMS offers a unique way to reach users without requiring an internet connection or data consumption. This channel is particularly effective for reaching a large and engaged audience, as demonstrated by its high usage rates across the globe.

### Types of SMS Messages

SMS messages can be categorized based on their purpose:

* **Transactional**: These are automated, non-marketing messages that are essential for the customer experience. Examples include:
  * Authentication messages (e.g., one-time passwords or OTPs)
  * Order confirmations and updates
  * Shipping and delivery notifications
* **Promotional**: These messages are sent to market products, services, or events. Examples include:
  * Information about flash sales and special offers
  * New product announcements
  * Event invitations
  * Essential Components and Regulations

# Key Components and Compliance

To successfully implement an SMS strategy, it's crucial to understand the key components and compliance regulations. This guide will walk you through the following topics:

* **SMS glossary and process**: Understanding the terminology and workflow. For more information, refer to [SMS Glossary and Process](/user-guide/campaigns-and-channels/sms-mms-and-rcs/sms/getting-started-with-sms/sms-glossary).
* **Choose a phone number**: Learn about the different types of numbers (for example, long codes, short codes) and which one is right for your brand. For more information, refer to [How to choose a phone number?](/user-guide/campaigns-and-channels/sms-mms-and-rcs/sms-for-north-america-region/choosing-a-phone-number)
* **Compliance**: An overview of global and regional regulations. For more information, refer to:
  * [DLT Impact](/user-guide/campaigns-and-channels/sms-mms-and-rcs/compliance-and-deliverability/messaging-regulations-for-india)
  * [Regulations for North America](/user-guide/campaigns-and-channels/sms-mms-and-rcs/compliance-and-deliverability/messaging-regulations-for-us)
* **SMS partners**: MoEngage natively integrates with connectors such as Twilio, ICS, Sinch, and many other SMS providers. For more information, refer to the [SMS partners of MoEngage](https://partners.moengage.com/hc/en-us/categories/4701102365972-SMS).

# Next Steps

After you have understood the channel, you can begin setting up your SMS campaigns in MoEngage.

* To configure the SMS channel, refer to the following articles:
  * [Configure SMS Connectors](/user-guide/campaigns-and-channels/sms-mms-and-rcs/sms/getting-started-with-sms/configure-an-sms-sender)
  * [Subscription Management and Keywords](/user-guide/campaigns-and-channels/sms-mms-and-rcs/other-settings/configure-subscription-and-keywords)
* To create an SMS campaign, refer to the following articles:
  * [Create an SMS Campaign](/user-guide/campaigns-and-channels/sms-mms-and-rcs/sms/create-an-sms-campaign)
  * [Send Transactional Messages](/user-guide/inform/create/create-alert)
* To analyze SMS campaigns, refer to [SMS Campaign Analytics](/user-guide/campaigns-and-channels/sms-mms-and-rcs/sms/analyze-sms-campaigns).