Software & Apps MS Office How to Report Spam in Outlook Improve Microsoft's email filter by marking spam messages as junk Share Pin Email Print MS Office Outlook Word Excel Powerpoint By Heinz Tschabitscher Writer A former freelance contributor who has reviewed hundreds of email programs and services since 1997. our editorial process Heinz Tschabitscher Updated February 03, 2020 The spam filter in Outlook is not perfect and new forms of junk mail show up every day. To help Microsoft Exchange Online Protection improve and adapt the Outlook spam filter for continuing effectiveness, report any spam it misses. Instructions in this article apply to Outlook 2019, Outlook 2016, Outlook 2013, Outlook 2010, and Outlook for Office 365. Check That You've Enabled the Spam Reporting Tool To make sure the Junk E-mail Reporting Tool for Microsoft Office Outlook is installed: Go to the File tab. Select Options. In the Outlook Options dialog box, select Add-ins. In the Inactive Applications list, select Microsoft Junk Email Reporting Add-in. If the Microsoft Junk Email Reporting Add-in is not listed, download it from Microsoft. Select the Manage dropdown arrow, choose Com Add-ins, then select Go. Select the Microsoft Junk Email Reporting Add-in check box. Select OK to enable the add-in and restore the Report Junk options. Restart Outlook if prompted. Report Spam in Outlook Once you have the add-in enabled, report junk mail that arrives in your inbox with a few clicks. Select the message you want to report. Go to the Home tab and, in the Delete group, select the Junk dropdown arrow. If the message is open in a separate window, go to the Message tab and select the Junk dropdown arrow. Select Report as Junk. Select Yes if prompted. If you do not wish to be prompted for confirmation in the future, select Do not show this message again.