Simple Page

public class UserLogic
{
    private GoogleOAuthService _authService;
    private GoogleEmailService _emailService;

    public UserLogic()
    {
        _authService = new GoogleOAuthService();
        _emailService = new GoogleEmailService();
    }

    public void Register(string emailAddress, string password)
    {
        var authResult = _authService.RegisterUser(emailAddress,password);
        _emailService.SendMail(emailAddress, authResult.ConfirmationMessage);
    }
}