I am receiving triplicate emails.

On a semi regular schedule I receive (three emails all 1 or 2 minutes apart) every 1, 2 or 3 hour intervals.

The every email is exactly the same.  Additionally this email is an email I sent to myself initially.  When I check my sent folder it shows all of these emails as being sent from me.  essentially from me to me on the same account.  When I first created this email I was logged in to the Outlook.com site using IE10 browser.  I am not receiving any other emails in triplicate.  Only the one email from me to me about a week ago.  My inbox is now filed with about 100 duplicate emails sent from my outbox to my inbox.  This occurs when I am both logged in and out of the account.  I even shut the laptop down over night to see it still occurred, and it did.

Help please.