I managed to make some settings on my oldest son´s age that were not fit, so when he should play his games, he couldn´t. As age is not an editable setting, I had to create a new account. As his email address was already used, I created a new sub account, and tried to switch email addresses as described at https://support.us.playstation.com/app/answers/detail/a_id/349/~/transfer-email-address-sign-in-id, with no luck. His primary email address was still considered "taken".
Luckily we managed to get him online to play using my wife´s email for a while, and some other ones that I have. But it kept nagging me that he couldn´t use his own. And I hate the idea of creating an entire new email address just for this. Kids have to many email addresses as it is.
What I tried
I tried using his facebook.com address, which should forward the confirmation emails from Sony to his gmail account. Nope! It seems like facebook is filtering these messages, as my test emails sent to his facebook.com address showed up in his inbox immediately.Solution!
Then I googled for gmail aliases, and found a marvelous feature!If my normal address is my.gmail.address@gmail.com, then I could use my.gmail.address+whatever@gmail.com, and it would still show up in my inbox!
By putting the +text suffix to his username, my son now has a working account which communicates with his primary email address!!!
https://support.google.com/mail/answer/12096
Mission complete!
