Basically, a deeplink is a browser URL. You can use it to direct users to a specific area within your website upon clicking on the web push notification.

By default, Batch will open the homepage of your site (or the page where Batch was integrated into).

If you want to direct your user to a specific page on your website, you must add a deeplink to your push campaign:

Note: You can also direct your users to an external page of your website, such as independent landing pages or even social networking sites.

You can easily collect your Batch campaign opens by creating the parameters related to your campaign in your analytics tool (AT Internet, Google Analytics, etc.) and then adding them to the deeplink of your push campaign.

For more information, follow this documentation: How Can I Track Web Push Opens in AT Internet?