Complex search needed

[kondybas]

Existing form in main window allow search for one string over multiple places.

Some users requests more complex search engine that allow search multiple strings in multiple places. For example:

search in INBOX.foo and subfolders
where sender contains "@billing.zzz"
and subject contains "report"

It's seems that nothing similar exists among plugins. If someone implement such functionality via plugin it would be a great plus for RC!