Software & Apps MS Office How to Report Spam in Outlook Improve Microsoft's email filter by marking spam messages as junk 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 March 09, 2020 MS Office Outlook Word Excel Powerpoint Tweet Share Email The spam filter in Outlook is not perfect, and new forms of junk mail show up every day. When you identify an email as junk, you help Microsoft Exchange Online Protection improve. The Outlook spam filter is fine-tuned for continuing effectiveness when you 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 Confirm the Junk E-mail Reporting Tool for Microsoft Office Outlook is installed or install it: Go to the File tab. Select Options. In the Outlook Options dialog box, select Add-ins. In the Inactive Applications list, select Microsoft Junk E-mail Reporting Add-in. If the Microsoft Junk Email Reporting Add-in is not listed, download it from Microsoft. Select the Manage drop-down arrow, choose Com Add-ins, and then select Go. Select the Microsoft Junk E-mail Reporting Add-in check box. Select OK to enable the add-in and restore the Report Junk options. Restart Outlook if prompted to do so. If you need to recover mail from the Outlook Junk Mail folder, you can do so. When you do, you are showing Microsoft what good email looks like. Report Spam in Outlook After 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 drop-down arrow. If the message is open in a separate window, go to the Message tab and select the Junk drop-down arrow. Select Report as Junk. Select Yes if prompted. If you do not want to be prompted for confirmation in the future, select Do not show this message again.