I'm sure she's a lovely woman, but...?
You probably would not sign on to do business with a real estate agent whose email address was WillDanceForBeer@something-dot-com, right? But I've seen agents tweeting or blogging that people often query with email addresses that are less than professional. Addresses like HotChickie@whatever-dot-com don't exactly give off that professional vibe.
Get a separate email address for writing-related business. It's easy to get another one, so there's no excuse. Do it now. Even if you think your From line tells us something about you, it's better to tell the world that you're a professional. Your name should appear in the FROM line as your first name and your last name or however you intend it to appear on the cover of your book. That means no From line such as The Smith Family or Mrs. Jane Doe. And no Soccer Girlie, even if you've won the World Cup.
Begin as you mean to go on. Introduce yourself with your bestselling-author-name.
(Unless you intend to use a pen name. But even then, use your legal name in the From line.)
That email account? Give it a signature. Give it a professional-looking signature. Not your favorite quote from Mystery Science Theater 3000 (which yes, I do sometimes use on my personal email account) but a signature with your name as it will appear on your book cover, your website address, and no ascii art.
No colors except black and white please. No utterly gorgeous curly fonts that are unreadable. No queries that play music or have artwork embedded in the background.
Begin as you mean to go on. If you intend to write professionally, start being professional. Start now.
The common advice in the business world is to dress for your next position. If you're in middle management and want to be in upper management, you dress one "click" higher than you have to in order to insinuate that you're capable of better things than you've got now.
Your email query is your suit and tie. Dress for your next position.
*I did change the instructor's email address significantly, but you get the point.
Jane Lebak is the author of The Guardian (Thomas Nelson, 1994), Seven Archangels: Annihilation (Double-Edged Publishing, 2008) and The Boys Upstairs (MuseItUp, 2010). At Seven Angels, Four Kids, One Family, she blogs about what happens when a distracted daydreamer and a gamer geek attempt to raise four children. She is represented by the riveting Roseanne Wells of the Marianne Strong Literary Agency.