Cécile, we do use the Calendar File token as a "Add to Calendar" hyperlink in the registration confirmation email of our physical events. For webinars, since we use GoToWebinar, we utilize the Add to Calendar functionality of GoToWebinar in the Add to Calendar hyperlink in those registration emails using the following link/ tokens: https://www2.gotomeeting.com/synchOutlook?wid={{my.Event Number}}&uid={{member.registration code}}