Try activating the IMAP/POP settings on gmail, then suck in your gmail emails into a desktop client that supports bouncing to spam accounts, c.f. http://www.ray

Try activating the IMAP/POP settings on gmail, then suck in your gmail emails into a desktop client that supports bouncing to spam accounts, c.f. http://www.raymond.cc/blog/archives/2008/10/23/bounce-email-spam-messages-back-to-spammers-with-non-delivery-notifications/ http://www.raymond.cc/blog/archives/2008/10/23/bounce-email-...