Whenever creating filters like "label:x" I am rightfully warned that no newly incoming messages will be caught, because once an e-mail is eventually labelled, it's no longer considered "fresh".
But, such filters are sometimes useful by making batch edits to e-mails with a label. If I were to do this in another way, I'd have to edit each and every filter that applies that label.
So, reaching my main point:
- if I create a filter, say "label:x", will it execute itself? If it will, when? After each e-mail received? Daily? Hourly? Every minute?