Behodar:
The absurd amount of spam email I've been getting over the past month or so. I find it astounding that spam's been a problem for 25+ years, yet fixing the problem (e.g. validating who the sender is) has been in the providers' too-hard basket for just as long.
I used to be able to do wildcard blocking at work, now they have shifted the Outlook run by MS...BRRRRRRPPP
So I could do things like *@*.kz, *@*.football or *@spamdomain.com
Some of it I can do with Apple mails rules, but I may look at buying Spamsieve
I have no idea why some company does not offer white listed email service, I am sure the filtering would be far faster.