I'd like to run rules on emails that already exist. Not just on new ones. That way I can lable all old emails that meet a certain criteria.
You may want to add your vote here as well: https://missive.canny.io/feature-requests/p/create-rules-from-search-filters-and-apply-them-retroactively-to-previous-e-mail
Actually saw you've already upvoted, my bad ;-)