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A comment on The only safe email is text-only email. Parent comment

Re:The only safe email is text-only email by tscs37 on Tuesday September 12, 2017 @12:50PM (#15228933)
That does not sound terrible useful.

For one, it'll only work if both sender and receiver use it. Which means for 99.99% of mail traffic right now, it is utterly meaningless.

edit: Plus you also literally wasted everyone's time and energy.

I'd rather favor some kind of mechanism like grey-lists that don't require sender opt-in otherwise it'll be a dead technology just like GPG. (You can probably count the number of GPG emails within 1000 average mails on one hand)

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Re:The only safe email is text-only email by amelius on Tuesday September 12, 2017 @04:54PM (#15232560)
How about sending (by email) a link to a proof-of-work-website, so the hash function can be computed in javascript/wasm in a browser?

Anyway, I agree on the waste of time+energy.

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Re:The only safe email is text-only email by Sir_Cmpwn on Tuesday September 12, 2017 @12:56PM (#15228989)
We make incremental change. Adoption starts slow, then some middle players pick it up, one big player grabs it and then it proliferates. I've been working on a mail client for some time and I have plans to write a mail server, and both will have first class, opt-out support for hashcash.
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Re:The only safe email is text-only email by tscs37 on Tuesday September 12, 2017 @01:02PM (#15229037)
That sounds like a lovely pipe-dream.

I severely doubt any big player picks it up on grounds of it being cheaper and less energy intensive to simply greylist or blacklist.

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