Worth noting that this also works with GSuite email addresses. Reddit user 'unsafeword' has suggested (https://www.reddit.com/r/netsec/comments/6smdq0/how_to_c

Worth noting that this also works with GSuite email addresses. Reddit user 'unsafeword' has suggested (https://www.reddit.com/r/netsec/comments/6smdq0/how_to_confirm_a_google_users_specific_email/ https://www.reddit.com/r/netsec/comments/6smdq0/how_to_confi...) that for organisations like schools/universities could use this for identifying their own users, as the list isn't that large.