> For the complete documentation index, see [llms.txt](https://docs.omnichat.ai/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.omnichat.ai/en/features/conversation-2.0/mass-messaging-omo-only.md).

# Mass Messaging (OMO-only)

Send mass messages to your own customers using this feature.

## **Overview:**

This feature, designed for the OMO (Online-Merge-Offline) plans, allows authorized store operators (Sales Managers and Salesperson) to efficiently send bulk messages to their customers. It is primarily intended for customer engagement initiatives such as promotions and new product launches.

**Key Features:**

* **Multi-channel Support:** Supports messaging across major platforms including LINE, Facebook, Instagram, and WhatsApp.
  * For WhatsApp users, it is required to use Message Templates to send bulk messages to contacts who have not interacted with the business account within the past 24 hours.

{% hint style="info" %}
**Web Channel Exclusion:** Currently, web channels are not supported for this feature.
{% endhint %}

This feature can only be accessed when the contact is in the Salesperson/Sales Manager's "My Cases- Progress" inbox.