How to block a sender on icloud mail

[Alickadoo]

That's it.

I am getting messages addressed to me - which aren't for me.

How can I stop them?

[selwonk]

You should be able to create a rule to remove them automatically:

https://support.apple.com/en-gb/guide/icloud/mm6b1...

Not strictly blocking them but you shouldn't see them again once the rule is in place.

[stemll]

Right click on the mail (assuming using the Mail app) and select Block Contact. Probably then move it to Junk too