Outlook.com Postmaster

This site provides information to information technology professionals who administer systems that send email to and receive email from Outlook.com. It also provides some information about how users with Outlook.com accounts can report junk email and phishing attempts. However, it is not intended to provide extensive support to Outlook.com users. If you are an Outlook.com user in need of support, please visit .
To navigate this site please use the navigation links to the left, or to jump right to the most requested information please click on one of the links below.

Announcements

New Postmaster Site

Welcome to the new Outlook.com Postmaster site. We've introduced this new site in order to help senders improve their reputations and increase deliverability into Outlook.com inboxes.