Reporting spam emails to spam filter products/services usually requires you to provide the MIME source of the spam message as an .eml file. Lotus Notes provides a few ways to creating an .eml file from an email (drag and drop email to the desktop or File -> Save as) but it requires end users to perform multiple steps to report the email (no single-click action). Nevertheless, you can add a custom action to the mail template yourself to provide a single-click action. The code attached (ReportSpam.lss) is an example I have used to generate an .eml file from a selected email(s) and send it as an .eml attachment to an address specified in the constant SPAM_EMAIL_ADDRESS. The code was created and tested as a folder action (Inbox) in Notes 8.5.x.