Polymer Views

Undeleted View

UNDELETED

Only matches undeleted messages. Useful as a simple view, rather than for colouring.

Highlight useless mail

OR DELETED KEYWORD $Junk

I use this to make the messages grey italic.

Highlight or view unread mail

UNSEEN UNDELETED UNKEYWORD $Junk

We don't want to highlight unread spam or deleted messages.

You could also write this as:

NOT OR OR SEEN DELETED KEYWORD $Junk

However, the [IPL] might rewrite it to save the extra bytes. (Although I'm pretty sure it wouldn't, but you never know. It does rewrite NOT SEEN to UNSEEN, for instance.)

Highlight answered mail

ANSWERED

Pretty obvious. I do it in green - I seem to recall Mulberry does the same.