Correct me if I'm wrong, but I believe there's an inconsistency with how labels work in Gmail and Airmail. Gmail labels are applied to threads, whereas Airmail labels are applied to individual messages within the threads.
I feel like Gmail's application works better as labels are normally consistent from the beginning to the end of a threaded conversation (same authors, topics, etc). As it is now with Airmail, constantly reapplying the same labels to a thread each time a reply is received is cumbersome and inefficient. IMO, the thread should be updated with any labels that were previously applied to it.
I vote for applying labels to entire threads.
I prefer the AirMail way. I think it should be an option
Craig Prichard commented
I disagree. Often my threads include emails with action items. So I have to label them differently as they move through my workflow process. Having labels always apply to the entire thread would be a problem for me. However, having the option to choose between having the label applied to the individual email or the entire thread would be acceptable. Currently there is an Apply Label action which does not discriminate. Consider replacing it with two (2) Actions: Apply Label to Message or Apply Label to Thread.
This is the one thing that prevents me from using Airmail.
I read some years ago the same discussion about Airmail v1 that this could easily become a setting. Now I'm searching again and hereby read that it's not implemented yet.