Preview your content using test profiles preview

From the edit content screen of your message or in the Email Designer, click the Simulate content button.

Select a test profile. You can check the values available in the columns. Use the right/left arrows to browse data.

Click the Select data icon above the list to add or remove columns.

You can see personalization fields specific to the current message at the end of the list. In this example, the profile city, first name and last name. Select those fields and make sure these values are populated in your test profiles.

In the message preview, personalized elements are replaced by the selected test profile data. For example, for this message, both email content and email subject are personalized:

Select other test profiles to preview your email for each variant of your message.