The endless cycle of Google products being replaced by something else to no useful effect.
I just don't bother with any of them anymore except Gmail, and that's mostly inertia on my part.
I just don't bother with any of them anymore except Gmail, and that's mostly inertia on my part.
EDIT: I realise that question was a bit abrupt, sorry. I've looked at Proton mail in the past, and it does look good, but I can't tell if the calendar is any good (or even out of beta).
I think the only thing that kinda sucked was desktop integration. You wind up running a service on your computer to allow Thunderbird/Outlook to sync back to the Protonmail server.
https://proton.me/blog/calendar-free-web-android
Looks like they support shared calendars:
Ah well, maybe I just need to give a few of them a try and see what they're like. I'm increasingly uncomfortable with having Google be such critical part of my life.