Managing personal Outlook.com account settings, security, and privacy
Hi DustinWilliard,
Currently, Microsoft account does not support merging accounts.
Customers can link accounts with the following steps:
1.0 Auto-forward all old account mail to new account. This way at least customers will have all of their mail in one place, and can reply to it using their new address.
2.0 To forward mail, log in to the account from which you want your mail forwarded, and click the gear menu at the upper right. Choose More mail settings from the dropdown, then Email forwarding from the Managing your account list.
3.0 Link your old account to your new account. Log in to one of your accounts, then click your user name in the upper right. Choose Account settings. On the left side of the screen, click Permissions, then click Manage linked accounts. In the new screen, choose Add linked
4.0 To switch between two linked accounts, click the user tile at the upper-right of your Outlook window.
For more information about Outlook.com, please check this FAQ.
Thanks!