Yes pls!

I'm 100% with this guy: "Currently using Time Tree and it's trash. Proton mail is excellent and I really want to get my wife to move over to Proton too. Lack of this feature is the deal breaker atm"

Would be a game changer.

Currently using Time Tree and it's trash. Proton mail is excellent and I really want to get my wife to move over to Proton too. Lack of this feature is the deal breaker atm. Once this is implemented we'll move fully over to Proton and sign up for premium.

I very much miss this functionality on the app for ios.

I'm trying to coordinate travel with friends and family via proton calendar and the lack of collaborative functionality is making it hard when I am not the only person doing the planning. currently my workaround is to create events for proposed items on our itineraries and invite my friends and family as participants. problem is I am the owner of the events and they cannot edit the events themselves. what I really want is shared events which are editable by multiple people. even better would be shared calendars which my f&f can view or edit.

This would be very helpful for Business and Visionary subscribers, where a group of users needs to transparently post and coordinate events without laborious and extraneous communication.
User access permissions might be necessary for Business accounts, so a calendar service can be subdivided among groups of users, with certain users designated by the account-holder able to see 'the master calendar'.

We have a business domain and we would all like to have a collaborative calendar for meetings, work events. It would be nice to be able to at least share your calendars with co-workers so we can keep track of schedules.

would be a great idea, but you will have to set it up with tight security, so only the right People can access it when needed.

This is the only thing stopping me from using the calendar. I need a calendar that I can use with other Proton users so we can synchronize scheduling in our busy family.