The emails I get from Craigslist are from potential buyers and they never have the same return address, being the buyer's personal email addy. And the subject is the sale subject, so that's always different. So, I use an Act-On shortcut to send those emails to the Craigslist mailbox.

Have you used MailStamps or Mail Act-On?

No Rob I haven't. I use Gmail IMAP via Apple Mail and have filters set up that label various addresses @bioneural.net differently; these labels correspond to sub-mailboxes in Mail. Furthermore, I have Rules set up in Mail that colour-code the background of the message as it lands in my Inbox/ sub-mailbox so I can instantly recognize to which address each message was sent. Also in Gmail any message that is "starred" corresponds to the "Message is flagged" rule in a Smart Mailbox in Mail. Thus I'm not sure what role these add-ons would have.

[quote post="979"]How about iGTD?

I did look at iGTD yes, but I need to take my tasks mobile. So far only OmniFocus and Things are promising native apps with iPhone sync, so far as I know.

Have you used MailStamps or Mail Act-On? The latter is free and is really great. With simply keystrokes, it will apply filters from Mail.app's builtin filters. Adding more is as easy as duplicating and renaming the filter. One that I use quite often is flagging certain online retailer email receipts. My filter moves them to a Receipts mailbox and also paints the email red (meaning for me, needs to be filed in my finance ledger, MoneyDance). Then, when I process those receipts, I apply another Act-On filter (I call it "Processed") and it simply paints that email green. Pretty handy.

How about iGTD? Have you explored this free app?