Mailing-lists are a good way of getting your questions across. Most developers are subscribed so you usually get quick replies.
Please note that you need to be subscribed in order to post on mailinglist! You register by sending mail with message (not subject!) “register” to subscription adress (see below) You should get an confirmation mail asking if you want to subscribe to that mailing-list or not. After replying to that you can post by sending to mailinglist adress (seen below).