admin_created_user_email()

function admin_created_user_email( $text ) {
	$roles = get_editable_roles();
	$role  = $roles[ $_REQUEST['role'] ];

	return sprintf(
		/* translators: 1: Site title, 2: Site URL, 3: User role. */
		__(
			'Hi,
You've been invited to join '%1$s' at
%2$s with the role of %3$s.
If you do not want to join this site please ignore
this email. This invitation will expire in a few days.

Please click the following link to activate your user account:
%%s'
		),
		gc_specialchars_decode( get_bloginfo( 'name' ), ENT_QUOTES ),
		home_url(),
		gc_specialchars_decode( translate_user_role( $role['name'] ) )
	);
}