Aptean Ship allows you to preview your email templates using existing shipment data.
In Setup > eNotify > Templates, click the Preview button in the row of the template you want to preview.
Select the shipment for which you want to load preview data into the current template. You can add filters to narrow your search or choose from existing Queries.
Click the Preview button.
The data from the shipment you selected will populate the template and generate a preview.