Fastmail has wildcard email support, so it’s pretty easy to have an email per purchase you make (for example). This makes it easy to see who leaked your email to spammers. Anyway, I have nowhere near the volume of spam with Fastmail that I had with Gmail.
My point was not about wildcard emails, which Gmail also offers. Rather, the amount of spam you get is typically based on how well known your email address is to spammers. If someone’s not getting much spam, it usually just means they haven’t used their email address in places where they would get it. This is regardless of whether it’s a wildcard email or not.
