Okay, the last email was not good IMHO because you laid a guilt trip on him and made him feel guilty. Making a spouse feel guilty is never good, esp when it is calculated. You are telling him you've changed, but are showing him otherwise. You need to DETACH from him. Quit sending him these emails and quit trying to guilt him into feeling sorry for you. Self pity is not an attractive quality, and until he can see you strong and balanced on your own two feet, he will not want to come back. It demonstrates that you HAVEN'T grown, despite you SAYING otherwise.
That being said, I think it is obvious from his email that he still cares about you and wants to make this work. However, you're being too pushy and needy. Your last email lacked a show of growth. He KNOWS you want him back, now quit pushing him for it and SHOW him that you will be okay with or without him. However, show him that you PREFER him, not NEED him. I know you said you don't NEED him anymore, but your actions show otherwise. They show him, "I'm desperate! Come save me from this torment!" Re-read your last email and look at how transparent this message is.
You need to get control of yourself and check your actions before doing foolish things (like the email). You're torturing yourself by doing what you're doing. Detach from him and focus on YOU, okay? Please do this for YOU.
