I don't have an answer. This issue is why I left Proton mail. I'm waiting for a built in (or reasonably automatic) solution before migrating my email back to Proton.
Thank you for asking here. I'll be reading along in case someone has something that's not too burdensome.
If I'm not mistaken, the mobile mail client does this. I remember there being a button at the top of the email to add the event to Proton Calendar
That's if there's an ics file attached, I'm referring to reading the email to get your flight information.
Oh, okay, gotcha
Lol, I just realised I'm in the minority, I hated Gmail doing that shit.
I only want stuff I add explicitly to my calendar.
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