MailCore/mailcore2 — pull request #623 by pfennema (2014-03-06 07:51:18+00:00)
Title: add new searchexpression with NOT operator

A search operation with 'not' already exists in the underlying libetpan library, but there was no interface in mailcore2. With this search expression you can have search expressions such as 'subject does not contain xyz' or 'mail address xyz is not included on the 'to line'.