And bypassed everyone's filters for list mail. Bravo.

Setup your filters correctly and that’s not an issue. “From” is rarely the right header to use for an email list filter.

This doesn't even make sense; a filter that filters on From: wouldn't detect the sender having used a bcc:. To: is more the issue here.

I meant to say To, my mistake there. That doesn’t negate my point, almost all mailing lists include a List-ID and/or other similar fields. That’s included even when the list was bcc’d and is what you should be filtering on, not the To: field. Gmail even uses it automatically when you click on a message from a mailing list and click “filter messages like this”.