Spam is a minimal effort endeavor. A lead generator for scams. Only 0.1% or 0.01% response rate is good. They only want the unsophisticated, naive recipients. E

Spam is a minimal effort endeavor. A lead generator for scams. Only 0.1% or 0.01% response rate is good. They only want the unsophisticated, naive recipients. Expending effort to tweak rules is not worth the effort. (Although if they can get AI to do it, then that's back to near zero effort)