> ## Documentation Index
> Fetch the complete documentation index at: https://moengage.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Trigger campaigns 

# Introduction

MoEngage allows you to create new campaigns or trigger existing campaigns from an external source. Read more about [MoEngage campaigns.](/user-guide/campaigns-and-channels)

# Scope

The following two use-cases are supported:

## 1. Create new campaigns

You can create new campaigns using our Campaign APIs. Currently, MoEngage only supports creation on Push API campaigns.

| Channel | API details                                                         | Description                                                                                                                                                                                                                       |
| ------- | ------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- |
| Push    | [Send Push Notification](/api/transactional/send-push-notification) | Push API helps to: <ol><li>Create campaigns (targeting all users or a group of users) to send notifications.</li><li>Target a single user using a unique user attribute.</li><li>Personalize the payload for each user.</li></ol> |

## 2. Trigger new campaigns

A marketer can trigger an already existing campaign on MoEngage from an external source.

**Step 1-**

Create an event trigger campaign on MoEngage. Event trigger campaigns are triggered for a user only when a specific event is raised. Read more about [event triggered campaigns](/user-guide/campaigns-and-channels/getting-started/triggers/event/create-an-event-triggered-campaign).

**Step 2-**

You can set trigger from an external source to hit our [Event APIs](https://developers.moengage.com/hc/en-us/articles/4413174104852-Event-). As soon as an event is added, the campaign would be sent to the user.