I think there is a gmails extractor out there that does the exact same thing.
If you really want to make this attractive I suggest you add these features:
1. extract the name of the sender as well as their email
2. load accounts from list so you can extract multiple accounts.
yes it doesDoes it remove duplicates?
50$ for a lite version and 100$ for a robust version -
The first 100 sales however 25 for lite and 50 for robust -
and ... of course.. free for BHW members ~,0
Whatever features you put in both tho are up to you.
if you need someone to test it let me know.
Cheers
1_mill_soon.