Skyped you. Email is too damn easy to be ignoring. I see horrible emails in my inbox, literally the only thing they get right is haphazardly dropping a link in there for me to click on. Yeah, you can bet these guys don't give a shit either because it still works for them even when they are doing practically everything else wrong.
Sure you can really break down specific things like finding your voice, tonality, style, technique, ect... But at the very top of everyone's inbox is an opportunity to put your marketing message right in front of your prospect; every day, every other day, every other month even...If you have something to say and can somehow connect it to your product or service, it's as easy as pushing the damn send button. Yeah, stupid to ignore email these days.