My authority is co-owner.
I have checked [Preview].
(In [Account Settings]-[Email Notification]-[Preview (in items I own)])
But I can't get the email.
Does anyone know the solution?
I also check the following.
・[Download (in items I own)]
・[Upload (in items I own)]
・[Deleted (in items I own)]
I have confirmed that I received the following email.