"And the url did not work because my work email is private (and will stay so)."<p>I have not tried this, but there is some email obfuscation feature:<p><a href="https://proton.me/support/pass-email-alias" rel="nofollow">https://proton.me/support/pass-email-alias</a><p>and other email obfuscation services.<p>Not sure if this would matter for something like a calendar import, as I'm sure how the traversal works.<p>Also, the author could have tried a Murena /e/ os de-googled phone.<p>Glancing at my Murena /e/ os "App Lounge" there's dizzying number of calendar options with high privacy scores.<p>Also, doing some poking around and testing rather than going all-in on proton mail's calendar, esp. if calendaring is so important.<p>That said I use proton mail's calendar for everything personal and it works "ok" for me.