AuthenticationModule.cs

public AuthenticationModule(IMemberRepository memberRepository, ISecurityLogic securityLogic, IEmailService emailService)
{
    _memberRepository = memberRepository;
    _securityLogic = securityLogic;
    _emailService = emailService;

    Post["/register"] = args => PostRegister(this.Bind<RegistrationViewModel>());
}

public Negotiator PostRegister(RegistrationViewModel model)
{
    string salt = _securityLogic.GenerateSalt(128);
    var member = new Member
                     {
                         Email = model.Email,
                         Salt = salt,
                         Password = _securityLogic.HashPassword(Guid.NewGuid().ToString(), salt)
                     };

    _memberRepository.Add(member);

    _emailService
        .NewEmail()
        .FromTemplate("Registration")
        .WithBodyParameters(new[] { member.Id, model.Email })
        .Send();

    return View["success"];
}