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A comment on Running your own email is increasingly an artisanal choice, not a practical one. Parent comment
That's already a thing. Hashcash [1], the PoW algorithm underpinning Bitcoin, was originally conceived as a method to prevent email spam.
[1] https://en.wikipedia.org/wiki/Hashcash
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That's already a thing. Hashcash [1], the PoW algorithm underpinning Bitcoin, was originally conceived as a method to prevent email spam.
[1] https://en.wikipedia.org/wiki/Hashcash