My calendars are currently hosted by Google. Because they are full of private data, I'd like to switch them to Proton as I already did for mail and drive. But I don't want to change the agenda applications I am currently using that work very well for me. And I don't want to switch a vendor lock-in because my great calendar service can be used only with one client. I definitely need a iCal bridge like it has been done for mail, available on all the major platforms, including Android and IOS.

This feature is a real dealbreaker for me. I never would have expected there to be absolutely no way to interact programmatically with the calendar - especially when this has been requested for 6 years. We need this feature, and we need it now.

I was actually planning on starting a company to help businesses migrate/use privacy friendly non-big tech services. Though I understand that using the native app might be more secure, companies really need this kind of bridge function. Especially as the native apps miss crucial functionality. Unfortunately I can't really recommend Proton with these essentials.

Without todo's and tasks using proton bridge to sync proton calendar to ical would wokr nicely integrating with apples reminder app.

Proton Mail gets all the love but Proton Calendar has always been missing features. If you really want to position yourself as a Google replacement, you really need to get on these basic features already.

Need this for integrating my Calender appointments into my Linux calender with notifications. My vote is for a CLI Calender bridge.

Are we able to get a response from Proton on this? It was shared 6 years ago ...

This would also provide a work-around for the missing backup functionality, currently keeping Proton Calendar from becoming a viable solution for business use.

I understand that Proton is slowly growing and it's amazing how far you've already come. But...

Calendar synch into Outlook/EM Client/Thunderbird is a kind of basic wish. The Proton Calendar client (inside Proton Mail) is not enough. I really need to keep using my EM Client, which works great with email but not contacts and no calendar? This is a BIG request.

ProtonMail is not worth using in the age of AI. If you can't sync calendar events for local LLM queries, what's the point? I'll be transitioning to another email service as soon as I get the time. ProtonMail is not business ready if you can't sync calendars. I can't run any kind of automation on my ProtonMail calendar events.

We cannot work with Proton suite without a third party integration, i.e. Calendly.
Now we have a good email solution with the worst imaginable calendar ever - zero connectivity.
I Proton Email I could connect my Wordpress in seconds using "create token" feature.
Why Proton calendar cannot do the same?

YES ! I recently switched to Proton from Google, and being able to share calendars is the last thing I haven't found a solution for yet. If this is not implemented, I will have to find another tool for my calendars (I had to do it for my tasks too, which is fine but I would love to not have to get yet another tool...)

Absolutely a must have, I must be able to maintain and see conflicts in different calendars. If that's not possible, Proton isn't mature enough to migrate away from Microsoft.

This would also allow integration with things like homeassistant and nextcloud instances.

I will not be renewing my subscription if this feature is not implemented by the time my current subscription is up; I have given Proton the benefit of the doubt when it comes to new features since 2018; with the release of Lumo, Wallet and Authenticator, I have lost faith that they value quality over quantity. Providing a way to integrate your calendar with other calendars such as a work calendar by way of an email application like Thunderbird is a mind-boggling decision to me and shows that the people in charge of the Proton product roadmap prioritize users with very different needs from me. That's obviously fine, it just means that I have to find a product that does meet my needs (or self-host).

This is the only thing that prevent me to start fully using proton !

Please add this.

Hugely essential

This is very important. Especially since you can only delete all your calendar entries in Proton. Thunderbird would allow ability to delete a date range.

Please add this functionality.