public async Task ChangeSmtpOptionAsync(ChangeSmtpOptionModel model)
{
var config = _configurationManager.ParseCurrent();
var smtpOption = _configurationRoot.Parse <SmtpOption>(nameof(SmtpOption));
smtpOption.UserName = model.UserName;
config[nameof(SmtpOption)] = JToken.FromObject(smtpOption);
_configurationManager.SaveConfig(config);
await _secretsManager.SetAsync(ConfigConsts.Mail.PasswordKey, model.Password);
}