I am using Thunderbird 9 and I have a problem I cannot solve in a "nice" way.
My input is a series of emails I received regularly and I want to filter at two levels. First, if the email is from a specific sender and contains one of a set of strings, I want it to be moved to a folder. My problem here is that I cannot create a filter with clauses like X AND (Y OR W OR Z) which is what I need. How can I do this?
I know the filtering I am performing would be better done at mail-server level, but I don't have that option, so...is what I am trying to do even possible?
Thank you very much!