Quote Originally Posted by DivaVocals View Post
For the very same reasons why passwords are case sensitive.. Makes the login/username harder to guess..
That is silly. Email addresses are not case sensitive in the 'real' world. Unless someone wants to petition for a change to RFC 5322 and RFC 6531.

User names in Windows (local and directory/domain based) are not sensitive because it would allow duplicate users (potentially), same with case sensitive email addresses.

Me@myHome.com would be a 'different' user than me@myhome.com, yet on the internet both would be delivered to the same place, so I could then reset Me@myHome.com's password using the user me@myhome.com credentials.