	Name	Description
	AbortTimeout	Gets or sets the length of time before the abort operation times out.
	ClientDomain	Gets or sets the domain announced by the client.
	Config	Gets or sets Smtp object settings.
	DeliveryStatusNotificationReturnMessageMethod	Gets or sets the value indicating to the SMTP server whether it should attach the entire original message or headers only.
	DeliveryStatusNotificationType	Gets or sets the bit field specifying the conditions under which the SMTP server should generate and send a delivery status notification (DSN) messages.
	EnabledFeatures	Gets or sets the bit field specifying the enabled extensions.
	Encoding	Gets or sets the Encoding to use to encode and decode command parameters and server responses.
	InstanceId	Gets instance ID (intended for logging purposes).
	InvokeFromCurrentThreads	Gets a value indicating whether to raise events from the current thread or to use a SynchronizationContext object available when an asynchronous operation was started. The default value is `false`.
	IsAuthenticated	Returns a value indicating whether the session is authenticated.
	IsBusy	Gets a value indicating whether there any operation (method) in progress.
	IsConnected	Gets a value indicating whether the session is connected.
	IsConnectionSecured	Gets the value indicating whether the control connection is secured.
	LocalEndPoint	Gets the local client EndPoint.
	LogSource	Gets or sets the source object for all log messages generated by this object. If not set, the property returns the current object.
	MaxMailSize	Gets the maximum mail message size announced by the server.
	Proxy	Gets or sets the network proxy to use to access a remote server.
	RemoteEndPoint	Gets the remote server EndPoint.
	ServerDomain	Gets the domain announced by the server.
	ServerName	Gets the server name, if available.
	ServerPort	Gets the server port, if available.
	State	Gets the current state of the Smtp object.
	SupportedFeatures	Gets the bit field specifying the extensions supported by the server.
	Timeout	Gets or sets the length of time in milliseconds before the operation times out (specify -1 or 0 to indicate that the request does not time out).
	TraceListenerManager	Gets or sets the TraceListenerManager object to which the log messages generated by this object are sent. If not set, the Default trace listener manager is used. If this property is set to null, all messages from this object wont be logged.
	TraceSource	Gets or sets the source object for all log messages generated by this object. If not set, the property returns the current object.
	UserName	Gets the authenticated user name, if available.

	Name	Description
	AlternativeExplicitSslPort	Alternative SMTP/Explicit SSL port (587).
	DefaultImplicitSslPort	Default SMTP/Implicit SSL port (465).
	DefaultPort	Default SMTP port (25).

	Name	Description
	Authenticate	Overloaded. Authenticates the user to the SMTP server using the specified authentication method that does not require credentials (NTLM or GSSAPI).
	AuthenticateAsync	Overloaded. Asynchronous authenticates the user to the SMTP server using the specified authentication method that does not require credentials (NTLM or GSSAPI).
	Cancel	Aborts the current operation.
	CheckSession	Checks whether the SMTP session is still connected. Throws an exception on error.
	Connect	Overloaded. Connects to the SMTP server.
	ConnectAsync	Overloaded. Asynchronously connects to the SMTP server.
	Disconnect	Disconnects from the SMTP server and returns exit message from the server.
	DisconnectAsync	Overloaded. Asynchronously disconnects from the SMTP server and returns exit message from the server.
	Dispose	Disposes the Smtp object and all the socket objects.
	EnhancedTurn	Instructs the server to start processing the message queue for a specified node (domain).
	EnhancedTurnAsync	Overloaded. Asynchronously sends the ETRN command to the server to start processing the message queue for a specified node (domain).
	GetDomainMXAsync	Overloaded. Asynchronously returns the list of available MX records in order of preference of the specified domain.
	GetSessionStatus	Checks whether the SMTP session is still connected and returns its state.
	GetSupportedAuthenticationMethods	Gets the list of supported authentication methods.
	KeepAlive	Sends a NOOP command to the server to keep the connection alive.
	KeepAliveAsync	Overloaded. Asynchronously sends a NOOP command to the server to keep the connection alive.
	ReadResponse	Returns the response of the SMTP server to the command.
	ReadResponseAsync	Overloaded. Asynchronously returns the corresponding response of the SMTP server to the command that was sent using the SendCommand method.
	ResolveDomainMx	Overloaded. Retrieves the list of domain's MX records from DNS and returns the list of hosts that accept its email (in order of preference).
	Send	Overloaded. Sends a mail message (MimeMessage).
	SendAsync	Overloaded. Asynchronously sends the mail message to the specified recipients.
	SendCommand	Executes a command on the SMTP server.
	SendCommandAsync	Overloaded. Asynchronously sends user-defined command to the server.
	SendDirect	Overloaded. Sends the message by submitting the message directly to the recipients' SMTP servers.
	SetSocketFactory	Sets the socket factory to be used to create communication sockets.
	ToString	Overridden. Returns a string representation of this object.
	UpgradeConnection	Overloaded. Secures the connection with TLS/SSL using default parameters.
	UpgradeConnectionAsync	Overloaded. Asynchronously secures the connection with TLS/SSL using default parameters.
	Verify	Verifies whether the server is willing to accept mail for a given recipient.
	VerifyAsync	Overloaded. Asynchronously verifies if given email address is accepted by the server without actual submitting of the message data.

	Name	Description
	Dispose	Releases the unmanaged resources used by the Smtp and optionally releases the managed resources.
	OnAuthenticateCompleted	Raises the AuthenticateCompleted event.
	OnCertificateReceived	Raises the CertificateReceived event.
	OnCertificateRequired	Raises the CertificateRequired event.
	OnCommandResponse	Raises the CommandResponse event.
	OnConnectCompleted	Raises the ConnectCompleted event.
	OnDisconnectCompleted	Raises the DisconnectCompleted event.
	OnEnhancedTurnCompleted	Raises the EnhancedTurnCompleted event.
	OnKeepAliveCompleted	Raises the KeepAliveCompleted event.
	OnProgress	Raises the StateChanged event.
	OnReadResponseCompleted	Raises the ReadResponseCompleted event.
	OnRejectedRecipient	Raises the RejectedRecipient event.
	OnSendCommandCompleted	Raises the SendCommandCompleted event.
	OnSendCompleted	Raises the SendCompleted event.
	OnSendingMessage	Raises the SendingMessage event.
	OnStateChanged	Raises the StateChanged event.
	OnUpgradeConnectionCompleted	Raises the UpgradeConnectionCompleted event.
	OnVerifyCompleted	Raises the VerifyCompleted event.

	Name	Description
	AuthenticateCompleted	Occurs when an asynchronous authentication operation completes.
	CertificateReceived	Occurs when an SMTP server's certificate was received and verified.
	CertificateRequired	Occurs when a client certificate is required by the SMTP server, or the one provided was not accepted.
	CommandResponse	Occurs when a command has been sent to or a response is received from the server.
	ConnectCompleted	Occurs when an asynchronous ConnectAsync operation completes.
	DisconnectCompleted	Occurs when an asynchronous DisconnectAsync operation completes.
	EnhancedTurnCompleted	Occurs when an asynchronous EnhancedTurnAsync operation completes.
	KeepAliveCompleted	Occurs when an asynchronous KeepAliveAsync operation completes.
	Progress	Occurs when data is send or received.
	ReadResponseCompleted	Occurs when an asynchronous ReadResponseAsync operation completes.
	RejectedRecipient	Occurs when a recipient is rejected by the server.
	SendCommandCompleted	Occurs when an asynchronous SendCommandAsync operation completes.
	SendCompleted	Occurs when an asynchronous SendAsync operation completes.
	SendingMessage	Occurs when a message is being sent.
	StateChanged	Occurs when the state of the Smtp object is changed.
	UpgradeConnectionCompleted	Occurs when an asynchronous UpgradeConnectionAsync operation completes.
	VerifyCompleted	Occurs when an asynchronous VerifyAsync operation completes.

Smtp Class Members

Public Constructors

Public Properties

Public Fields

Public Methods

Protected Methods

Public Events

See Also

Reference