I'm about to send my very first query letter for an idea I have for an article/recurring column. I'm sending it first to a local newspaper. Should I mail it or e-mail it? (or both?). Plus any other advice will be most appreciated. Also, I'm assuming I can make simultaneous submissions of an idea to other publications, am I right?
Note: There are no writers' guidelines for this newspaper on its' website.

Thanks everyone.