As you create your email in the content builder, you can use the side-by-side preview region to determine how the final email will look to contacts. The preview is updated as you make your changes, and you can see a preview for desktop, phone, and tablet.
Test with contact
To preview personalized content, click the Test with contact icon in the preview pane. The contact is used to populate values for personalization, dynamic content, and relational table data. After you provide a valid contact, the contact's information is used to populate personalized content, relational table content, and dynamic content.
Preview dynamic content
To view dynamic content without providing a contact, click the Preview dynamic content icon in the preview pane. Select the rule from the drop-down list, then refresh to see the selected rule that is applied in the email. If a test contact was previously entered and not cleared, it is honored for personalization and relational table values.
Check email health
To view the spam score, errors, and warnings for the email, click the Check email health icon in the preview pane. The system analyzes the email and runs a spam check. It displays a summary of any warnings and errors. Click the drop-down arrow to expand each section to see a list of warnings and errors. If you have more that one dynamic content block, the spam score is specific to the previewed content. This value can be different for each dynamic content block, so make sure that you check each one.