Lets break this down..
The mail function:
1) It's boolean, so an if statement would tell you wether or not it sends.
2) It's setup like so:
mail (to, subject, message, optional headers, optional parameters);
In your post, you show
to = $email
subject = "Rugido Staff"
message = "Welcome to Rugido!!!"
headers = everything else
So it's choking on your header information.