Inheritance: System.Configuration.ConfigurationSection
 public EmailPackageRelayer(EmailBuilderConfigurationSection configuration)
     : this(configuration.PickupLocation)
 {
 }
 public FileSystemEmailPackageRelayer(EmailBuilderConfigurationSection configuration)
     : base(configuration)
 {
 }
 public static IEmailPackageRelayer CreateRelayerFromConfiguration(EmailBuilderConfigurationSection configuration)
 {
     IEmailPackageRelayer relayer = Activator.CreateInstance(Type.GetType(configuration.EmailSenderType), configuration) as IEmailPackageRelayer;
     return relayer;
 }