I stopped using Proton Calendar for that only reason : the lack of integration into my phone ecosystem.

I understand Proton is intended for privacy but I don't enjoy beeing in a walled garden.

Given that Proton is intended for privacy, perhaps a simple and relatively safe default would be to create an XML feed that would only block of busy times. For example, in my use case I would want to view my Proton Calendar, but not any of the details of the meeting in my work Outlook. If I need to have my Proton Calendar show up as "busy" in my work account (so people can see that I am busy when trying to schedule something) then I can use PowerAutomate within the work account alone. Other people might use IFTTT or Zapier. Regardelss, by only showing an appointment I'm not exposing any of my data exposed to other calendars.

Reiterating my comment from the other "Shared Calendar" idea, as this is becoming a greater and greater source of needless friction for me.

While I have fully migrated to ProtonMail and ProtonCalendar, my wife still uses Google Calendar and Gmail, and I suspect that will be the case for many ProtonCalendar users who need to share a calendar with their partners/spouses/loved ones. Or Outlook 365, etc. So please consider this as you further flesh out the shared calendar features. While it is an understandable hope, I don't think it is a reasonable expectation that all of our respective loved ones will switch to Proton simply because we have.

For me to use Proton Calendar, this functionality is an absolute must-have. Work requires me to use their external calendar service, and if I cannot create, edit, or delete events or even get updates from that calendar I find no use in Proton Calendar at all.

It would be great to have two categories of Proton Calendars:

1. Proton-protected (encrypted) calendars which are
a) only shareable within an organization
b) or sharable with other Proton users

2. Open calendars that are cross platform compatible. These do not need to be encrypted.

This functionality would be great and is also required. I do need to see work and personal events in the same pane. Unfortunately the beta feature isn't robust enough to load either my legacy personal calendar or my work calendar via Google ICS link. All the calendars I need to get access to are "too big".

Being able to snyc with Google for work is critical. Doesn't matter if I need to accept google may be able to read the calendar, but I need private in my Google calendar (that doesn't update every 8 hours or something silly like that) and google in my private (that doesn't need to be given access by my workplace admin, if possible).

This is critical for me. This is the single hurdle remaining for my wife and I to switch from Google to Proton. We want to maintain our own separate calendars and be able to see each other's and modify each other's on rare occasions.

I would *love* to use proton calendar for my personal calendar, but yes, I need to be able to access Google calendars in the same app read/write to sync certain calendars with others, and ideally import/export Outlook/office365 calendars to coordinate personal life stuff around my work schedule as well.

I fully understand there wouldn't be any privacy gained for the externally-hosted calendars, but I have no control over that anyway. At least this way I could keep my personal calendar secure without loosing the convenience of managing all my calendars from one app.

If it matters, I am a paid proton mail user for about a year now, and I love the service. Just trying to use more of it!

100% Agree, If it could be able to connect GCalendar and Outlook on proton and have the possibility to create, modification, sync an event to proton on any different agenda, the solution would be perfect

I was just trying to convince my wife to join Proton to use a shared calendar. I thought after the Proton calendar is out of beta this feature will be implemented - unfortunately I have to wait a bit longer.

Btw. a shared calendar should be editable for everyone - a read-only link does not serve our purposes.

Please make this a top priority feature.

Agree that this is crucial and the one thing that is keeping me from switching to Proton Calendar. I need to be able to track appointments at work, where we're required to use Outlook, on personal calendar.

IMO the best thing would be the ability to forward appointments from Outlook to the personal Proton calendar and have them show there *without* being accepted on the Proton calendar (and thus triggering duplicate "accepts" for the meeting organizer). This is what I currently do with Google calendar. But whatever the solution, something needs to be done to allow this kind of integration/display of work appointments on private Proton calendar.

I can't even believe this is supposed to be an idea.

It's a basic requirement of an internet calendar.

I just convinced someone to join Proton precisely to pull them off Google for our shared calendars, only to discover this isn't possible yet...

This is a fantastic idea.
I just left google, and this will be a giant obstacle for my wife and I.
We use the google shared calendar all of the time.
It was extremely convenient to make it our default calendar and when one of us added an event it magically showed up on the other's phone.
FYI we use iPhones.
Also, it would notify us by email that an event was created.
So, I agree that google is evil but they do have some feature rich applications and a shareable calendar is gigantic, especially for families with kid schedules.
Please make this a top priority.

Can't use proton calendar if it doesn't easily sync (2-way) with outlook.

We can now add shared calendar, it is a start, but it would be nice if we can create, from proton, an event in a shared google calendar.
(a lot of us can not totaly quit Google Calendar for shared business calendar)

Syncing with Exchange, OWA, Google would be a dream!

Many of the comments in here seem to be somewhat non-specific, but I read them as being just another way of saying "I wish Proton Calendar supported CalDav" - there is another feature request for that in this forum.

This is the issue that is preventing me from using the Protnmail service more widely. I would move my small company account to Protonmail if the Proton calendar were able to be used in 3rd-party calendaring clients on MacOS and Windows.

As long as I can’t combine proton calendar (as private calendar) with my outlook events (work account) I can not use protonmail. I am forced to use for work with Outlook. At the moment I combine my private and outlook in a google calendar. I am not happy with that. So i am looking forward to be able to dig the google calendar for my private life and switch to Proton Calendar.

The"Create a link to your calendar and share it with anyone outside Proton." -option is not the solution. I don't want to share my private Proton Calendar into outlook. I want it to be pivate