I have to new features I would like to see (assuming anyone reads this forum anymore):

1. Instead of an incremental backup where messages continually add up, allow an option for Gmail Backup to mirror the Gmail account. This will allow messages that you deleted since the last backup to be removed from the backup copy instead of being retained there and having to manually find and delete them. Effectively a one-way synchronization of the account.

2. Allow a list of labels (archives) to be presented to the user so that they can pick which labels/archived messages they wish to backup instead of the entire account.

Cheers, and thanks for the product.