If we use an "if" tile in a customer journey, we can put the condition "have clicked on any link on the email ###".

This condition includes all links that the email contains, including the "Unsubscribe" link that is mandatory for commercial emails.

The "Unsubscribe" link should be excluded from the condition because it messes up the statistics that the customer journey provides, and the recipient's interest in products, services, and so on cannot be correctly tracked.