I've forwarded one of my really old email addresses to Gmail. I'd like to create a filter so that any mail to that old address is always labeled properly in Gmail.
I can create a Gmail filter with the "To: " containing that address, but that doesn't catch all mails to that address, only the ones that are explicitly addressed. Often, there is spam where somebody else is the explicit recipient, and my old address was simply Bcc'd. The "To: " filter doesn't work.
What I'd like to do is filter on the "Delivered-To:" header. Is that possible with Gmail or am I stuck with the three standard options of From, To, Subject?