Rated 4 out of 5 stars

Works well! One thing I wanted to point out is I had messages that I thought were duplicates in every sense (checked all the criteria in this plugin), but I didn't find the duplicates I wanted to detect. When I turned off "size", I did and was surprised to see that these dup's I wanted to find were the same in every way except for the size was different by 8 bytes between them. This size difference is still a mystery to me, but I feel like size might never be a good criteria to check on.

This review is for a previous version of the add-on (0.3.3).