I was really looking forward to this app in order to remove tens of thousands of duplicate emails and other files, and thus saves at least 15 Gb of disk space and speed up the Apple mail app.
Very unfortunately, the app totally failed in its mission. It identified only a limited number of duplicates. And for many duplicates it found, it didn't allow their automatic removal, resulting in a process that is even worse than removing files one by one manually through the Finder.
Aggravating all of this, the company promises a 30-day refund, which was very sadly never effected, despite many contacts with the customer team