SmtpMsa.fromJson constructor
      
      SmtpMsa.fromJson(
    
    
- Map json_
Implementation
SmtpMsa.fromJson(core.Map json_)
  : this(
      host: json_['host'] as core.String?,
      password: json_['password'] as core.String?,
      port: json_['port'] as core.int?,
      securityMode: json_['securityMode'] as core.String?,
      username: json_['username'] as core.String?,
    );