I use the "companyname" part of "companyname@mydomain.tld" to express (often very profane) editorial views about the company when their site won't let me sign-u

I use the "companyname" part of "companyname@mydomain.tld" to express (often very profane) editorial views about the company when their site won't let me sign-up with "companyname@mydomain.tdl". I'm sure nobody ever sees it, but it makes me feel better.