https://arstechnica.com/information-technology/2022/05/some-...
My favorite thing is when the companies outsource the email marketing, so that it has absolutely zero relevance. I've been using the same online tax preparer for 10 years, and I've had exactly zero refunds, yet their emails during tax season always let me know that "my refund is waiting".
Sorry, but honestly speaking even checking your profile does not reveal what your web site is. Probably you are marketing person from your words, but that's not clear.
Hope this feedback helps!
And as a second thought, the way China amd Russia are going, maybe we should just reclaim all their ipv4 addresses, and just give each country 1 IP, they can proxy through it on their end.
Finally, true decentralisation!
This sometimes falls foul of spammers adding some random addresses of the form blahblah@mycatchall.domain.tld or <commonname>@mycatchall.domain.tld into their lists, but that hasn't happened often enough to be a problem. That it isn't much of a problem surprises me a little, given how much <commonname>@domain.tld (no sub-domain) addresses are used this way. I have considered trying the pattern somename@<sub-domain-per-company>.domain.tld as an alternative if that becomes a problem, but before implementing that I need to change my email setup (doing that anyway soon as running Zimbra's OSS version is going to get more difficult next year) and maybe my DNS server of choice (if wildcard MX records are an issue, I've not looked into that).
Sometimes I get funny looks for addresses like this, especially as I usually work the company/other name in there somewhere. I had one website refuse to accept an address based on their name, which was a rad flag and I backed away from going any further into dealing with that organisation.
The id could be anything, and the SHA1 HMAC takes 32 characters in base32 (which is an email-address-safe encoding). Then just configure your spamfilter to reject any address where the HMAC doesn’t check out.
Of course, the drawback is that you’ll need a computer to generate a new address… At which point you may as well store an explicit whitelist of valid addresses.
<emanynapmoc>@mydomain.tld
Spelling the company's name backwards makes it easy to match to a company for use by my own spam filter without setting off their pattern detectors.
AND CALL them, if possible: “I’ve received marketing emails from your company recently, how is this possible, I’ve never signed up, yaddayadda… “
Generate some cost on their side.