Try classifying it as spam. When I classify something in my inbox as spam, if they have a “subscription feed” attached to it, it asks me if I want to unsubscribe before it puts the email in my spam folder or deletes it.
If it’s real + valid Trump host (I believe) then don’t tell spam filters it’s a bad domain, just create a filter that puts messages from that domain into the trash.
I use Gmail; how do I list an email address as spam?