FortiSIEM provides Security Information and Event Management (SIEM) and User and Entity Behavior Analytics (UEBA)
Article Id 231776

I've built some really nice dashboards, using feedback form the North American FML ATP team members, that I think you'll all really enjoy. I've shared it with a few customers that were under attack and they found it to be extremely helpful. I would suggest creating a FortiMail dashboard with 9 tabs. Then just load each XML file into each own's tab.

Please let me know what you think of it. 

Note- I'll be uploading a series of other dashboards for other Fortinet products too.