Add Proton Calendar

[ph00lt0]

Now that they have also released an application for Android I think it's worth listing. It's a convenient option for people who don't want to do as much set up work. Also a lot more secure for most people.
https://calendar.protonmail.com/

Under https://privacyguides.org/software/calendar-contacts/

[dngray]

As an alternative to etesync, I think it could be Have you used it?

[ph00lt0]

I tested it, worked nicely. Not a user myself.

[IkelAtomig]

I think you don't need to add it as you already mentioned that Email Providers in the Page. ProtonMail also comes under the category. So, why wasting resources ?

[dngray]

This was added in privacyguides/privacyguides.org#818.