ManageWriters

If you want to pay a company to do this, you could use Fastmail.com.

You can use your own domain, and set up many aliases (there is a limit though). You can also use [email protected] (but you can also do this with other email providers such as Gmail)...

They also have a long list of their own domains (maybe 20-40, I can't remember) that you can use.

Or you could set up your own server with a catch all email address. https://en.wikipedia.org/wiki/Catch-all