Last year I accidentally became an expert on interviewing. I didn’t want to, but hey, we do what we need to do. I just published some things I learned in the process on A List Apart, in an article called How to Interview. Here’s one piece of advice on how to get companies to email you back…
Send separate, personal emails to each of the likely hiring managers you found. Make it really, really short. Don’t go on about how awesome you are—you’ll get a chance to do that later. Tell them you like their company, you like the role, you’re interested in talking. Link to stuff you’ve done: your LinkedIn profile, your portfolio, articles/books you’ve written, etc. Then ask them if they’d be willing to have a call, or forward your information on to the right person. The point is to not burden people. If they see a long email, the chances are high that they will delete it. But if they see a short email that’s respectful of their time and gives them the information they need to make a quick decision—that’s a different story.