If this is a legit post and you are serious I have a few questions:

*. Do you trust your daughter? If you trust her, why the need to invade her private life?

2. What are your concerns? Do you think she is doing drugs or having sex?

She's *2. If you think she is secretly involved in some unlawful acts through email sit down and talk to her about it. Tell her you dont know much about the internet and ask her what she uses her email account for.

Maybe the fruit of your loins is a succubus. In this case you can install keystroke software on your home computer, ask her to show you how email works, and hiddenly record her username and password.