Recently my 2010 Macbook had a logic board failure- I replaced it with a rMBP and luckily was able to salvage the hard drive, which is now in a USB enclosure. I have access to all the files on the original machine's hard drive, but cannot boot from it. Unfortunately I had an extremely important email that I need to recover. I cannot seem to access it from my Comcast web portal because it was sent so long ago, but I know that it was saved in the OSX Mail application because I had referred back to it several times prior. Is there anyway I can pull said email from the hard drive? Any help is greatly appreciated.