Comment on Sending newsletters should cost somethingparentComments−wongarsu4yThat's where we got the idea of proof-of-work in the 90s [1]. The problem is that this makes legitimate use cases like mailing lists very expensive, while providing little protection against spam from botnets.[1] https://en.wikipedia.org/wiki/Hashcash−rightbyte4yObviously a subscriber to a mailinglist need to set the cost to 0 for the list sender.
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That's where we got the idea of proof-of-work in the 90s [1]. The problem is that this makes legitimate use cases like mailing lists very expensive, while providing little protection against spam from botnets.
[1] https://en.wikipedia.org/wiki/Hashcash
Obviously a subscriber to a mailinglist need to set the cost to 0 for the list sender.