Does xss_clean destroy emails?

[eluser]sorenchr[/eluser]
Hi!

Using the form-validation library, I've set up af couple of rules for email inputs:

Code:

$this->form_validation->set_rules('login-email', 'Email', 'trim|required|max_length[255]|valid_email');

Is it necessary to xss_clean it also? If yes, could this somehow change the email? I wan't it to remain intact for storage in my db