If you manage personalized content on your site or in your database, you may want to share a link with subscribers that's specific to their account with you. For example, you might share a personalized coupon with a single recipient, so it can't be shared with others.
As long as you store unique identifier information for each subscriber in your database, you can do this with merge tags.
In this article, you'll learn to create an audience field and merge tag for a subscriber's unique link ID, which can be added to any valid URL in your email campaign.
Create link ID in audience
First, you'll need to create a link ID field in your audience.