Q: How do I block an email address in mac mail?

All your iCloud email, whether from an iOS or OS X device, goes through Apples email servers and you can control Mail Rules via the web interface as explained on the following link:

http://www.macobserver.com/tmo/article/how-to-use-mail-rules-in-apples-icloud.co m-mail

It acts differently, but that interface at least implies that you can set up rules to block email from entities that match the string you enter; only thing is you cannot specify 'ends with', so you would even need to be more careful becuase if you block emails From '.xyz' it might just auto filter From addresses like 'you.friend@mailServer.xyz.validCompany.com' -- hopefully you see what I mean... 

This doesn't work. I have several times used the Rules to get rid of this marketer from India, info@educationtopoor.ml, selling everything from underwear to gadgets and they just keep coming even though they use the same email

address. I use Delete, but I still get them in Junk. They are like a mosquito that keeps getting in through the screen only the season never ends. Isn't there some

kind of spam police in Mac that can block these things?

The problem with all these 'solutions' is when the section to the right of the @ sign (and to the left) changes with each email. The only constant (aside from the obvious phishing content) is ".nl" at the end, presumably referring to the Netherlands. I've asked Comcast to block all messages to me from the Netherlands, and they say it cannot be done. Similar messages come from domains ending in ".ru"

I'm sure I'm not alone.