Windows – Add Outlook 2013 mail to Windows 10 Action Center and Lock Screen

Well after some research and contacting Microsoft Support I found out the following:

Like Indrek said, only Metro/Live tile apps can show notifications on the lock screen, however the Mail app can NOT be simply synched with Outlook to display notifications on the lock screen. In order to do that you have to add your e-mail address manually and separately in the Mail app.

My problem stemmed from the fact that my e-mail address is a corporate e-mail and it does not use neither POP3 nor IMAP, it uses Microsoft Exchange. That is why it was unable to sync my emails. Please note it is an hp.com e-mail and not an Exchange e-mail address, as it appears there is a difference between Microsoft Exchange e-mail protocol and the Microsoft Exchange e-mail... program/service/whatever.

Short answer for tech savvy people: You need to manually set your mail server address and username in order to sync a Microsoft Exchange protocol e-mail.

To set up your Microsoft Exchange protocol email you need to add an account in the Mail app by opening the Mail app and pressing "Win + C" then going to "Settings" and "Accounts". Click "Add an account" and choose "Other" as the type of account. Choose "IMAP" and click "Show more details" on the next screen, here you need to fill out all the details, namely username and incoming/outgoing server - you may need to ask a system administrator to do this for you. After you do that your Mail app should sync.

Only Modern (or Metro, as they used to be called) apps can display notifications on the Windows 8/8.1 lock screen and Start menu, and Outlook 2013 is not one of them; thus, it can't directly display those notifications.

As a workaround, you can configure in the Mail app the same email account you are using in Outlook: Mail will then display the proper notifications when messages arrive, even if you actually use another program (Outlook) to read them.

If you are using an Exchange mailbox, Mail has full Exchange support: just add your account to the app and it will autodiscover your server settings and sync your mailbox just like Outlook does. This will also sync your calendar and contacts, thus you will also get calendar notifications.

If you are using another mail server, you'll instead have to configure it in Mail as an IMAP account.