I made a change over on the sibling discussion site so that [Fedora] [Category] is at the end rather than the beginning of the subject line, since things like
in your mail client aren’t very useful. For Ask, which is going to have more drive-by questions, I think it’d be good to leave [Ask Fedora] at the beginning, but I’m thinking we should leave the category out entirely — because [Discussions in English/on installing or upgrading Fedora] takes up available space in most clients all by itself. Opinions, anyone?
Instead of dropping completely, it might be better to add a custom header if possible.
It can help to search and filter emails, something like X-Discourse-Category.