Yes, you can preview the winner message you have configured for each of the instant winners to check how the winners will see this message.
In order to preview the winner message you can follow these steps:
1. Connect to the Easypromos Dashboard through the following link: http://admin.easypromosapp.com
2. Locate the promotion you want to preview:
You are on the promotion's management page. Click on "Preview" option.
This will give you access to the preview area of the promotion, which will allow you to preview all the screens of the promotion, including the winner message: