Like Bo Lux, I use Mailwasher. I keep OE closed, Mailwasher checks my mailbox and lists all therein. It gives you 2 tick boxes against each, allowing you the opportunity to delete or bounce (or neither) the offending message. If the title doesn't give a cue you can open the message in Mailwasher and then decide. You then 'Process Mail' where it will delete or bounce as you have determined, adding the bounced to the blacklist. It will still display the blacklisted later, but at a glance you can sort your mailbox. When it has finished processing it opens OE for you and loads the permitted mails. Bouncing hopefully automatically drops your address from the computer generated e-mail address lists. Great stuff.