initial commit for engage messaging

Author: abcdefghijohnk

src/connections/destinations/catalog/engage-messaging/index.md

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+---
+title: Engage Destination
+---
+
+## Engage Messaging
+
+[Engage Messaging](https://engage.so/?utm_source=segmentio&utm_medium=docs&utm_campaign=partners) helps businesses send personalised messages to customers based on customer traits and actions.
+
+This destination is maintained by Engage Messaging. For any issues with the destination, [contact the Engage Messaging Support team](mailto:[email protected]).
+
+
+## Getting Started
+
+
+1. From the Destinations catalog page in the Segment App, click **Add Destination**.
+2. Search for "Engage Messaging" in the Destinations Catalog, after selecting it, choose the Source that will send data to Engage Messaging.
+4. Go to your [Engage dashboard](https://app.engage.so/settings/account), find and copy your "Public API key".
+5. Enter the API Key in the destination settings in Segment.
+
+## Supported methods
+
+Engage Messaging supports the following methods, as specified in the [Segment Spec](/docs/connections/spec).
+
+### Identify
+
+Send [Identify](/docs/connections/spec/identify) calls to identify the user profile and traits on Engage. For example:
+
+```js
+analytics.identify('userId123', {
+  email: '[email protected]'
+});
+```
+
+If the user already exists on Engage, identify can also be used to update the user traits.
+Segment sends Identify calls to Engage Messaging as an `identify` event.
+
+
+### Track
+
+Send [Track](/docs/connections/spec/track) calls to track user events and actions. For example:
+
+```js
+analytics.track('Login Button Clicked')
+```
+
+Segment sends Track calls to Engage Messaging as a `track` event.
+
+---