I was thinking about spam resistant mail. Maybe one day I will do this as a service. It's greatest strength is also major inconvenience. So I hope it would work not only for technical minded. Probably it could be dealt with by having good UX/UI.
Basically the point is to give every interested party separate address to write to. Giving user a button to generate new random address (120-160bit random number encoded with Crockford's Base32). A bit like user+whatever@gmail.com that gmail supports, but my idea can't be easily gamed by not having constant part (like user@gmail.com). User can register to various services with different address and can detect when his email address was compromised.
Inconveniences: giving address to friends, writing them down on paper forms, dictation via phone. Maybe it would be a bit like having multiple telephone numbers - separate for every one.
For leaving out address for random people like on mailing lists or blog posts, there could be additional step of sending introductory e-mail with certain subject prefix required that would work a bit like CAPTCHA. Than you could reply from new address - designated for this person.
Yahoo had this ages ago. You'd pick a static prefix, but it'd be different from your primary address, and only whitelisted suffixes would be allowed through.
Basically the point is to give every interested party separate address to write to. Giving user a button to generate new random address (120-160bit random number encoded with Crockford's Base32). A bit like user+whatever@gmail.com that gmail supports, but my idea can't be easily gamed by not having constant part (like user@gmail.com). User can register to various services with different address and can detect when his email address was compromised.
Inconveniences: giving address to friends, writing them down on paper forms, dictation via phone. Maybe it would be a bit like having multiple telephone numbers - separate for every one.
For leaving out address for random people like on mailing lists or blog posts, there could be additional step of sending introductory e-mail with certain subject prefix required that would work a bit like CAPTCHA. Than you could reply from new address - designated for this person.