Yeah when companies claim they are 'personalizing the user experience for you' is code for 'we will tell you what you like'. The only person who can personalize is the individual. I fucking hate marketers. You even have to click a 'learn more' icon to see that these 'smart features for personalization' are being run through AI as they don't put it right in front of you it might slip passed most users.
Notes from setting up a truly minimal self-hosted email server with Postfix and OpenDKIM. Covers TLS, SPF, DKIM, DMARC, DNS, reverse DNS, multiple domains, and delivering to Gmail.