You can do this with aliases. For example Firefox's relay (or you can do it with a website and cloudflare). They'll also give you a catchall domain so you can e

You can do this with aliases. For example Firefox's relay (or you can do it with a website and cloudflare). They'll also give you a catchall domain so you can either have generated emails like "adafergtrees@mozmail.com" or "NameOfArbitraryBusiness@deepsun.mozmail.com". If you want to trash an email you can do that too.