A similar discussion, based around the use of SpamSieve, may well be worth viewing.

I am a bit of a SpamSieve fanboy, and most strongly recommend it, though I had a few initial problems with the setup. Seems what was intuitive to me, just wasn't so. Ergo, I had to read the manual. Imagine that! (Alas, each email client has its own nuances and thus the setups are slightly different.)


Harv
27" i7 iMac (10.13.6), iPhone Xs Max (12.1)

Those who can make you believe absurdities can make you commit atrocities. ~Voltaire