It has stopped working again as of WP version 4.6.1
We’ve just released a plugin that disables the new user notifications in WordPress 4.6 and higher. If you’re still looking for a solution to this, check it out here – https://ww.wp.xz.cn/plugins/disable-user-registration-notification-emails/.
@potent Plugins
your plugin disables new notification to admin not to users
try this one. https://ww.wp.xz.cn/plugins/manage-notification-emails/
it disables also: New user notification to user, Password change notification to user, E-mail address change notification to user and Password forgotten e-mail to user.
