Thanks. You were definitely on the right track. In order to be able to view all your email accounts on the "Notifications & Actions" panel with the option to change the Notification, Banners, Sounds, etc. individually like on Windows 8.1 Mobile, you must first make sure your email sync settings are set to receive emails "As items arrive". You must then send each of your accounts an email; if your settings are correct and there isn't anything fishy going on, you should receive notifications for all of your emails received. I had my email sync settings to "manually" so even though I would receive my emails when hitting the Sync button, I wasn't getting the option to customize my accounts individually because you have to get that notification forcibly. On Windows 8.1 as soon as I would create an email account, I would get the option to customize my notifications automatically, I guess it's no longer the case with Windows 10 Mobile. Thanks for the hint, and hopefully I have explained my solution as clear as possible for everyone else with the same problem.