I did a lot of spam-fighting in the early 2000s, which tapered off after 2012 and came largely to a stop by 2016. This was aided by a large number of domain names I had, which all had MX records pointing to my eMail server, which was configured with a catch-all account. This allowed absolutely enormous amounts of spam to be collected into that single catch-all account, as anything sent to any username under any domain I had ended up in that inbox.

I recall SpamCop calling me out on no less than six separate occasions as the primary reason why they lifted their daily reporting limits for any single account (in steps) from 100/day to 20,000/day over about 8 years. For at least one six month period I was the most frequent submitter of spam to their reporting service, and I was well within the top ten for quite a few years. Most of my submitting past a major 500/day benchmark (I was getting desperate for a way to automate things by then) was done via MailWasher’s ability to flag-and-autosubmit.

Fun times.

I still make use of an ancient pre-subscription version of Mailwasher that’s been kitbashed with a TLS 1.2 binary so it will still work (I should really update it with a v1.3 soon), but I no longer receive more than 50-100 pieces of spam per month into that catch-all anymore. Methinks they’ve cottoned on.