User blog comment:MisterWoodhouse/Social Activity, the 2010 Editor, and Unpausing Migrations/@comment-35698590-20201004175635/@comment-35698590-20201006120919

>Email notifications are up to the user, if they don't want any, they won't get any. And if they're not on Fandom anymore, they wouldn't even get your message even if they got a notification.

There are no internal notifications either - plus I'm not talking about a total stranger here so I know his talkpage used to be the way to contact him.