[sillystuff]

I still report spam to all ISPs/mail providers, if they have a proper abuse@dom contact and I can spare the few moments it takes. And, also report the spam/scam mail contact reply-to: addresses to their respective email providers when they differ from the sender provider. When scam mails contain URLs, I'll report those to their domain registrar / webhost.

I've had good responses from most places. An Eastern European domain registrar has revoked several scammer domains after my notifications. Some ISPs are a waste of time to send reports to, e.g., a few in E. Europe, and Colo Crossing. But, it is usually worth it to report abuse. I have an emeritus email address from a former employer where I made it my project since the pandemic to report all spam/scam mail received to that address. I cannot state that this is the reason nor even the main reason, but the volume of spam to that address has gone from a firehose to a single spam/scam message every 1-3 weeks.