Is there an SMX plugin which can be installed to reclassify spam messages?

Yes if you install the "SMX Advanced Security Plugin" then your users will be able to submit spam to SMX to be reclassified via Outlook 2016 and above or Office 365.

Please see our easy to follow guide below for information on how to install the plugin and also our end user guide for your users to submit missclassified emails to SMX.

SMX Advanced Security Plugins - Admin Guide

SMX Advanced Security Plugins - User Guide

Emails that have triggered the Whaling Protection and URL Analysis which must be submitted manually via email to be re-classified as spam.