This makes me 😭
UPDATE: Thanks @[email protected] for this update: The issue has now been commented on and was closed by the maintainer, where they explained why those blocks would be nonsense. But it appears the OP wants to still talk with maintainer privately about it.
Does proton do anything other than encrypting the email file? TLS should be enough to encrypt the transfer.
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Okey, that sounds super nice. I might just switch over my email as well to them, not just use them for their calendar.