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A comment on Ask HN: Why isn't whitelist only email used more often or even the standard?. Parent comment

Re:Ask HN: Why isn't whitelist only email used more often or... by stephenr on Thursday October 18, 2018 @12:30PM (#18249718)
I think there are better solutions to what you want to achieve.

If S/MIME certs were more readily available you could just spam-filter mail that isn't signed, and use the signer's details to better flag spam automatically.

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Re:Ask HN: Why isn't whitelist only email used more often or... by stuntkite on Thursday October 18, 2018 @12:34PM (#18249754)
Interesting.

Why I made this post is to figure out a better solution to what I want to achieve. You proposition here doesn't look like it solves it, but I didn't know about it before. I'll dig into it. If you have any further thoughts, I'd love to hear them.

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