I'm trying to configure some automation when it comes to labelling my Gmail mailbox.Currently, I want to apply label "X" to every new message that match the specific string "abc" and DON'T have label "Y".
The problem I'm facing is that whenever someone responds to old thread with label "Y", the filter is being triggered and this mail have to labels "X" and "Y".
TLDR: I don't want to label threads with specific label, but it is not working.