Question details:
First off, good work. Looks nice.

My main question is this:

Are labels, dates and "from" fields preserved? I am backing up from
one gmail account and moving to another with your software.

Thanks!

Jason

All these fields are preserved. Labels are stored in the backup directory in the labels.txt file, so you can manually edit them. Dates and From fields are part of the message stored in the .eml file.