> For the complete documentation index, see [llms.txt](https://tech.x2bee.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://tech.x2bee.com/dev-guide/developer-guide-en/dev-start/customer-message-sending.md).

# Customer Message Sending

## Overview

This explains how to send messages to customers for effective communication with them.

Customer message sending consists of the SMS Sending Guide, KakaoTalk Notification Sending Guide, Email Sending Guide, and more.

Each item provides detailed guidance on the sending method, service used, configuration file, template writing method, testing method, and more.

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## Document Structure

<details>

<summary><strong>SMS Sending Guide</strong></summary>

Explains the SMS sending source code and configuration method for sending text messages to customers.

</details>

<details>

<summary><strong>Email Sending Guide</strong></summary>

Explains the email sending source code and method for sending emails to customers.

</details>

<details>

<summary><strong>KakaoTalk Notification Sending Guide</strong></summary>

Explains the source code and method for sending KakaoTalk notification messages to customers.

</details>