Hi there Micahk,
You certainly can add the Email information directly into the Comments!
When Adding the Activity to Method From the Outllok Plugin, Just Copy the information contained in the "Email Message" field, into the "Comments" Field
After you've done this, The added activity in method will contain the Email body in the Comments!
(From the Activity)
(From the Grid - Sorry for the Quality of the Screenshot, had to do some impromptu resizing)
Thanks Michak,
-Ben