We already support subscriptions, but sadly there is no standard for this yet. That’s why our current system works only for Apple devices (https://fruux.uservoice.com/forums/153774-general/suggestions/3584235-add-server-side-subscriptions-so-that-users-don-t)
An error occurred while saving the commentAnonymous commented
Me too, I'm missing a function to subscribe to the calendar of my friend. Is there any chance we can see this coming?