Apparently not a lot of people do this?
Mail servers allow you to set a catch-all address. If mail gets sent to an address that’s not in use, it redirects to the catch-all one. This way, you can give out arbitrary firstname.lastname@example.org, and still have all emails neatly delivered to you. And that’s a small boon for contactability I guess, but the real tip is way better.
We’ve all received spam before right? How did that malicious party get our addresses? We can’t really tell. Unless… we used a unique address every time we had to supply one. some-site@, other-account@, etc@. A little mark to show us the way in case of bad behavior. …And also so you can easily discard “dirtied” addresses.
Of course, that’s all quite a bit harder if you don’t have your own mail server (or, you know, a rented one), but not impossible. You just have to go through account creation for every new address. That’s a pain, I know, but that’ll eventually be alleviated by API-powered interfaces for everything.
So for, no bites.