Merge pull request #5858 from segmentio/Engage-workaround

Add workaround for using liquid statements with images

Author: rchinn1

src/engage/content/email/template.md

@@ -47,11 +47,14 @@ You can send test emails before you include a template in marketing campaigns.
 - Profiles that you send test messages to must have a userId in Segment.
 5. Select **Send test email**.
 
+{% comment %} 
 > success ""
 > When you send a test message, the trait must be valid for the field it's being used in. For example:
 > - If you use `profile.traits.first_name` in the **From sender** field, it must be a valid username. 
 > - If you use `profile.traits.email` in the **Reply to email** field, it must be a valid email address.
 
+{% endcomment %}
+
 > info ""
 > You can also test email templates directly from a [Send an Email step](/docs/engage/journeys/build-journey/#send-an-email) in Journeys.
 
@@ -63,6 +66,15 @@ As you configure the template, click **Merge Tags** and select the profile trait
 
 You can also add merge tags in the heading or body text as you design an email with the [Drag and Drop](/docs/engage/content/email/editor/) or [HTML](/docs/engage/content/email/html-editor/) editors. Engage supports [liquid templating](https://liquidjs.com/tags/if.html){:target="blank"} to create dynamic content in the email design editor.
 
+### Use liquid statements with an image URL
+
+If you're using the [image content module](/docs/engage/content/email/editor/#add-content-modules) in the Drag and Drop Editor, you can't use liquid statements in the **Image URL** field. 
+{% raw %}
+To use liquid statements with an image, Segment recommends using an [**HTML block**](/docs/engage/content/email/editor/#add-content-modules) with the following syntax: <br>
+`<img src=“{{profile.traits.imageLink | default: '<insert your default URL here>'}}”`, where `profile.traits.imageLink` is an example profile trait representing personalized image links for each recipient. 
+
+{% endraw %}
+
 > info ""
 > To learn more about profile traits, visit Segment's [Computed Traits](/docs/engage/audiences/computed-traits) and [SQL Traits](/docs/engage/audiences/sql-traits/) documentation.