Google Mail Aliases or multiple Accounts?

Google Mail Aliases or multiple Accounts? References I have a mail address addressOne@googlemail.com and would like to have a second address addressTwo@googlemail.com (Alias address) in my Google Mail Account. I would like to add the second address as Alias to my Google Mail Account. But as far as I know, Google Mail does not support Aliases. The alternative is to create a second Google Mail Account (with the second mail address) and import mails from one Google account to the other. But are multiple Google Mail accounts allowed to have? What approach would you recommend to achieve having an Alias? Update: The solution to use primaryAdress+Alias@googlemail.com proposed by @nixda is a good. So there is no other way to set up an alias (besides creating multiple Google Mail Accounts)?