Question about an old account with a Deleted Email

Hi IMDB team, I got a question about an old account my friend had on IMDb. It was created by logging in to an old Gmail account that was deleted or disabled by Google awhile back. They don't remember the email as it was years ago, but if they do and they wanted to use it, is their rating data with activity and watchlist still preserved on your website or is his ratings, watchlist and all activity deleted by default with the Google account deletion and therefore his ratings are also deleted from the movies and shows he rated and added to his watchlist?