What you can do is have 2 functions, 1 to open your mail at the top of your script and 1 to actually take the report and click Tools -> Text Report. What you then need to do in the text report is to click Edit -> Select All and copy the text. The open your mail, enter the email address and paste the report into the details. Make sure to use the menus or you will have to record in Analog modet to capture the key strokes.
To make this work, you need to learn all the objects in your mail and save it in the GUI map editor.
I use a similar function to check for errors. I open word, search for specific errors and when WinRunner locates an error, it opens Word, pastes the screen shot and goes back to playback.