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Proton Calendar to...Android calendar? Via caldav, perhaps? (lemm.ee)

submitted 6 months ago by [email protected] to c/[email protected]

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Hi guys! So, I have Proton Mail, and this also gives me the Calendar. I love that I have a encrypted private calendar, but it bothers me that it doesn’t play well with any other app, as it’s not officially a “calendar” to Android. This bothers me, because I use GrapheneOS, with mostly no Google services, and I'd like my Gadgetbridge-connected smartwatch to be able to display calendar events, since they're not being shared with anyone else. But I can't, because Proton Calendar isn't really an Android Calendar. There’s a way in Proton to permanently share a link to your private calendar. In effect, it’s an up-to-date .ics file, that I believe needs to be checked/downloaded every time there’s an update. Is there a way to update this in Proton? Alternatively, I wouldn’t mind creating some caldav system that imported this, but not sure if there’s already any guide for it?

Thanks so much!

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[–] [email protected] 5 points 6 months ago (1 children)

Let's not forget that the point of Proton's services is encryption. The more points you want it to go through (Proton to Cal{SVC} to Android calendar app to watch), the more you have to relinquish that security if they aren't cooperative/companion apps.

For example, I use Proton on the web (through Tor, actually) because I get the security. If I used the Bridge, I'd be decrypting a layer just so I could use a favored email application.

[–] [email protected] 1 points 6 months ago (1 children)

Sure. But you should be able to decrypt it, so you can use your favored application, if so you choose. Or your favored OS. Which in my case is GrapheneOS. So I'm already in a kinda private environment. I can trust the internal OS not to talk to GOS. And I can trust my watch to do the same, because it's locked completely thanks to Gadgetbridge. The official companion app only saw the watch in the initial pairing/key exchange, in a garbage separate profile that doesn't hold any useful data, and it was removed immediately after. As you can see, my scenario is full data lockdown, and yet I can't choose my favored app to use in my trusted zone.

[–] [email protected] 2 points 6 months ago

You're not wrong, it's just about how Proton is built right now. It's still a pretty young ecosystem.

I will menton that all of their apps (both from GP and F-Droid) work great on my OOTB Galaxy 21 and send all notifications (emails, calendar events, etc.) to my Samsung Gear 3 watch no issues.