public async Task SendNoMasterPasswordHintEmailAsync(string email)
{
var message = CreateDefaultMessage(NoMasterPasswordHintTemplateId);
message.Subject = "Your Master Password Hint";
message.AddTo(email);
message.SetCategories(new List<string> { AdministrativeCategoryName, "No Master Password Hint" });
await _web.DeliverAsync(message);
}