Does anyone know if there is any software scripts that would back up all your emails (both sent and received folders) via POP protocol to your local PC folder/Dropbox/somewhere I can find it, and preferably to have the emails backed up into text files?

Thanks!

I don't guess imap is an option is it? Because I recently used this: https://raymii.org/s/software/Nopriv.py.html

Took a while as the e-mail address is pretty old, but I love it. I use Mutt to view it in the terminal and now I never have to get angry at iCloud again for doing a poor job of letting you view old e-mails from the web interface.

@jarland: unfortunately not, else it would have made my life so much easier. I am actually on behalf of a friend of mine and his uncle was using the Yahoo! China email which is due to be closed in August. I think Yahoo! only accept POP but not IMAP....