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.

In theOutlook Optionsdialog box, selectAdd-ins.

Screenshot of File tab

In theInactive Applicationslist, selectMicrosoft Junk E-mail Reporting Add-in.

If the Microsoft Junk Email Reporting Add-in is not listed, download it from Microsoft.

Select theManagedrop-down arrow,chooseCom Add-ins, and then selectGo.

Screenshot of Outlook Options

Select theMicrosoft Junk E-mail Reporting Add-incheck box.

SelectOKto initiate the add-in and restore the Report Junk options.

Restart Outlook if prompted to do so.

Screenshot of Microsoft Junk Email Reporting Add-in check box

When you do, you are showing Microsoft what good email looks like.

snag the message you want to report.

Go to theHometab and, in theDeletegroup, select theJunkdrop-down arrow.

Screenshot of Junk drop-down

If the message is open in a separate window, go to theMessagetab and select theJunkdrop-down arrow.