Many, I split topics logically over multiple gmail addresses which allowed me to isolate spam. I’ve also used throwaway sims for things like gumtree.com.au - there was a bunch of phone spam that hit the burner number so I’m glad I did that one.

Now I use two dedicated domains with catchalls which seem to work everywhere but gmail which should allow me to attribute and blackhole spam much more effectively. I really wish large providers (o365, aws) would provide low volume accounts for cheaper - having my company sales or procurements associated with my personal company email is silly, but the alternative is $4/month/account which really adds up but running your own mail server has it’s own time costs.