This is one of those things that are so simple that it is often hard for the men who have dipped themselves into so much PUA knowledge that they become robots spouting out quotations.
The trick to getting a girl to respond to an email is all in the attitude of the email. A woman is never responding to your words as much as she is responding to the attitude in which the words were written in. Women are emotion; so they are never just taking the words on a page at face value. They want to know the emotion behind the words. So if you write to them with a spirit of " I hope she responds" it will come across in the way you wrote and she will pick that up. She'll sense the weakness and it will be creepy because " how can a guy that doesn't even know me behave so weakly toward me? I'm weird I have flaws.. What the hell is his problem? He must think about me a lot and think Im more than what I am.. Thats creepy". Thats women logic for you.
So the trick to writing a email in a non creepy way is to just right to her KNOWING for a FACT in your heart that she is going to respond positively. Just write from that spirit. Believing in your own value, believing in your own attraction. Thats like someone saying whats the trick to doing good at an audition for acting? You simply just have to attack it head on will full blown confidence. Believing that you would be a great addition to the part.
Who's going to believe in you if you don't believe in yourself Bart? And if you don't believe you can be non creepy, how is anyone else going to do it for you?
Get the attitude straight first.
You're amazing man. Now don't let me be the only one who knows it
Peace & Love