Snail mail is more personal and more effective, AND you know it doesn't disappear into internet ether, or spam filters. That said, a personal email address is better than sending to an agent or production company. Although what you can do if the only address you have is an agent or production company (and a personal email address), send to both, and write in the email, "I sent a hardcopy to your agent (or production company) incase for some reason this email doesn't get through."
When sending to an email address, be sure you have a compelling subject line if the person doesn't know you or vaguely knows you like:
1. Referred by your friend Joe Splicer
2. We met at the Guild mixer last February
3. We worked together on ____________
4. Because I love your work on _____ I'm seeking your advice
www.theGreenlightCoach.com FIND ME
For more tips and articles by top entertainment industry career coach, The Greenlight Coach, visitwww.TheGreenlightCoachBlog.com