> For the complete documentation index, see [llms.txt](https://docs.hackle.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hackle.io/en/crm-marketing/sms.md).

# Text Message / SMS

{% hint style="success" %}
Boost your business performance with text messages that reliably reach your customers.
{% endhint %}

## Overview

Hackle's text message campaign is a CRM Marketing solution that provides direct and immediate communication to customers via SMS/LMS/MMS. By leveraging the universality of text messages receivable on all mobile phones, it guarantees high delivery rates and immediacy.

## Key Features

### 1. Support for Various Message Types

* **SMS (Short)**: Send concise messages within 90 bytes
* **LMS (Long)**: Deliver detailed information up to 2,000 bytes
* **MMS (Multimedia)**: Deliver text up to 2,000 bytes with files up to 300KB

### 2. Advanced Targeting System

* **Segment Targeting**: Precise targeting based on user attributes and behavioral patterns
* **Cohort-based Send**: Message sending to dynamically updated user groups
* **Personalized Messaging**: Compose personalized messages using user names, purchase history, remaining points, etc.

### 3. Smart Campaign Management

* **Fatigue Management**: User-specific send frequency management to prevent excessive message sending
* **Rate Limit**: Rate limit management for service stability
* **Scheduled Send**: Message scheduling for a specific date and time

### 4. Automated Journey Design

* **Event-based Send**: Automatic message sending when a specific event occurs (registration, purchase, churn, etc.)
* **Multi-step Journey**: Automatic follow-up message sending based on user responses
* **Conditional Branching**: Personalized message flows based on user attributes and behavior

## Key Benefits

<table data-view="cards"><thead><tr><th></th></tr></thead><tbody><tr><td><strong>Effective Information Delivery</strong><br>Reliably deliver messages even to customers who are not using the app, with a delivery rate of over 99%.</td></tr><tr><td><strong>Immediacy / Urgency Notification Optimization</strong><br>Messages are delivered within seconds of sending, optimized for urgent notifications such as payment and delivery.</td></tr><tr><td><strong>User Acquisition and Retention</strong><br>Reactivate inactive customers via text messages to improve retention and business performance.</td></tr><tr><td><strong>Integrated Campaign Management</strong><br>Manage campaign design, execution, and performance analysis within the Hackle platform.</td></tr><tr><td><strong>Cohort Targeting</strong><br>Target dynamically updated cohorts based on events to send messages.</td></tr><tr><td><strong>Campaign Performance Measurement</strong><br>Deeply measure not only delivery and reception rates but also purchase funnel conversions.</td></tr><tr><td><strong>Personalized Message Composition</strong><br>Personalize messages using nicknames, purchase history, membership tiers, and more.</td></tr><tr><td><strong>Journey-based Campaign Design</strong><br>Design personalized campaigns tailored to user journeys based on events/properties.</td></tr><tr><td><strong>Message A/B Test (Coming Soon)</strong><br>Optimize messages with A/B Tests to maximize campaign performance.</td></tr></tbody></table>


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