Refer a Friend Program

So my buddy just started playing on a starter edition, I was curious whether or not I could send him a RaF link to the e-mail he used to create that account to upgrade and still get the perks.

Or would he have to create a new e-mail, then I send him the link, and then create a whole new account from there?

Been scouring the internet and couldn’t find anything that was recent.

Recruit a friend died around last expansion I think, maybe longer. They MAY bring it back but I think they know the popularity of the expansion…3 million additional subs for this expansion isn’t bad.