Classes
class	AlternateView
	Represents the format to view an email message. More...

class	AlternateViewCollection
	Represents a collection of T:System.Net.Mail.AlternateView objects. More...

class	Attachment
	Represents an attachment to an e-mail. More...

class	AttachmentBase
	Base class that represents an email attachment. Classes T:System.Net.Mail.Attachment, T:System.Net.Mail.AlternateView, and T:System.Net.Mail.LinkedResource derive from this class. More...

class	AttachmentCollection
	Stores attachments to be sent as part of an e-mail message. More...

class	LinkedResource
	Represents an embedded external resource in an email attachment, such as an image in an HTML attachment. More...

class	LinkedResourceCollection
	Stores linked resources to be sent as part of an e-mail message. More...

class	MailAddress
	Represents the address of an electronic mail sender or recipient. More...

class	MailAddressCollection
	Store e-mail addresses that are associated with an e-mail message. More...

class	MailMessage
	Represents an e-mail message that can be sent using the T:System.Net.Mail.SmtpClient class. More...

class	SmtpClient
	Allows applications to send e-mail by using the Simple Mail Transfer Protocol (SMTP). More...

class	SmtpException
	Represents the exception that is thrown when the T:System.Net.Mail.SmtpClient is not able to complete a Overload:System.Net.Mail.SmtpClient.Send or Overload:System.Net.Mail.SmtpClient.SendAsync operation. More...

class	SmtpFailedRecipientException
	Represents the exception that is thrown when the T:System.Net.Mail.SmtpClient is not able to complete a Overload:System.Net.Mail.SmtpClient.Send or Overload:System.Net.Mail.SmtpClient.SendAsync operation to a particular recipient. More...

class	SmtpFailedRecipientsException
	The exception that is thrown when e-mail is sent using an T:System.Net.Mail.SmtpClient and cannot be delivered to all recipients. More...

class	SmtpPermission
	Controls access to Simple Mail Transport Protocol (SMTP) servers. More...

class	SmtpPermissionAttribute
	Controls access to Simple Mail Transport Protocol (SMTP) servers. More...

Enumerations
enum	DeliveryNotificationOptions { DeliveryNotificationOptions.None = 0x0, DeliveryNotificationOptions.OnSuccess = 0x1, DeliveryNotificationOptions.OnFailure = 0x2, DeliveryNotificationOptions.Delay = 0x4, DeliveryNotificationOptions.Never = 0x8000000 }
	Describes the delivery notification options for e-mail. More...

enum	MailHeaderID { Bcc = 0, Cc = 1, Comments = 2, ContentDescription = 3, ContentDisposition = 4, ContentID = 5, ContentLocation = 6, ContentTransferEncoding = 7, ContentType = 8, Date = 9, From = 10, Importance = 11, InReplyTo = 12, Keywords = 13, Max = 14, MessageID = 0xF, MimeVersion = 0x10, Priority = 17, References = 18, ReplyTo = 19, ResentBcc = 20, ResentCc = 21, ResentDate = 22, ResentFrom = 23, ResentMessageID = 24, ResentSender = 25, ResentTo = 26, Sender = 27, Subject = 28, To = 29, XPriority = 30, XReceiver = 0x1F, XSender = 0x20, ZMaxEnumValue = 0x20, Unknown = -1 }

enum	MailPriority { MailPriority.Normal, MailPriority.Low, MailPriority.High }
	Specifies the priority of a T:System.Net.Mail.MailMessage. More...

enum	MBDataType : byte { All, Dword, String, Binary, StringExpand, MultiString }

enum	MBErrors { DataNotFound = -2146646015, InvalidVersion = -2146646014, DuplicateNameWarning = 837636, InvalidDataWarning = 837637, AlreadyExists = -2147024713, InvalidParameter = -2147024809, PathNotFound = -2147024893, PathBusy = -2147024748, InsufficientBuffer = -2147024774, NoMoreItems = -2147024637, AccessDenied = -2147024891 }

enum	MBKeyAccess : uint { Read = 0x1, Write = 0x2 }

enum	MBUserType : byte { Other = 0, Asp = 101, File = 2, Server = 1, Wam = 100 }

enum	PropertyName { Invalid = 0, ServerState = 1016, PickupDirectory = 36880 }

enum	RecipientLocationType { Local, Unknown, NotLocal, WillForward, Ambiguous }

enum	ServerState { Starting = 1, Started, Stopping, Stopped, Pausing, Paused, Continuing }

enum	SmtpAccess { SmtpAccess.None, SmtpAccess.Connect, SmtpAccess.ConnectToUnrestrictedPort }
	Specifies the level of access allowed to a Simple Mail Transport Protocol (SMTP) server. More...

enum	SmtpDeliveryFormat { SmtpDeliveryFormat.SevenBit, SmtpDeliveryFormat.International }
	The delivery format to use for sending outgoing e-mail using the Simple Mail Transport Protocol (SMTP). More...

enum	SmtpDeliveryMethod { SmtpDeliveryMethod.Network, SmtpDeliveryMethod.SpecifiedPickupDirectory, SmtpDeliveryMethod.PickupDirectoryFromIis }
	Specifies how email messages are delivered. More...

enum	SmtpStatusCode { SmtpStatusCode.SystemStatus = 211, SmtpStatusCode.HelpMessage = 214, SmtpStatusCode.ServiceReady = 220, SmtpStatusCode.ServiceClosingTransmissionChannel = 221, SmtpStatusCode.Ok = 250, SmtpStatusCode.UserNotLocalWillForward = 251, SmtpStatusCode.CannotVerifyUserWillAttemptDelivery = 252, SmtpStatusCode.StartMailInput = 354, SmtpStatusCode.ServiceNotAvailable = 421, SmtpStatusCode.MailboxBusy = 450, SmtpStatusCode.LocalErrorInProcessing = 451, SmtpStatusCode.InsufficientStorage = 452, SmtpStatusCode.ClientNotPermitted = 454, SmtpStatusCode.CommandUnrecognized = 500, SmtpStatusCode.SyntaxError = 501, SmtpStatusCode.CommandNotImplemented = 502, SmtpStatusCode.BadCommandSequence = 503, SmtpStatusCode.MustIssueStartTlsFirst = 530, SmtpStatusCode.CommandParameterNotImplemented = 504, SmtpStatusCode.MailboxUnavailable = 550, SmtpStatusCode.UserNotLocalTryAlternatePath = 551, SmtpStatusCode.ExceededStorageAllocation = 552, SmtpStatusCode.MailboxNameNotAllowed = 553, SmtpStatusCode.TransactionFailed = 554, SmtpStatusCode.GeneralFailure = -1 }
	Specifies the outcome of sending e-mail by using the T:System.Net.Mail.SmtpClient class. More...

enum	SupportedAuth { None = 0, Login = 1, NTLM = 2, GSSAPI = 4, WDigest = 8 }

Functions
delegate void	SendCompletedEventHandler (object sender, AsyncCompletedEventArgs e)
	Represents the method that will handle the E:System.Net.Mail.SmtpClient.SendCompleted event. More...

Enumeration Type Documentation

◆ DeliveryNotificationOptions

enum System.Net.Mail.DeliveryNotificationOptions

strong

Describes the delivery notification options for e-mail.

Enumerator
None	No notification information will be sent. The mail server will utilize its configured behavior to determine whether it should generate a delivery notification.
OnSuccess	Notify if the delivery is successful.
OnFailure	Notify if the delivery is unsuccessful.
Delay	Notify if the delivery is delayed.
Never	A notification should not be generated under any circumstances.

Definition at line 5 of file DeliveryNotificationOptions.cs.

◆ MailPriority

enum System.Net.Mail.MailPriority

strong

Specifies the priority of a T:System.Net.Mail.MailMessage.

Enumerator
Normal	The email has normal priority.
Low	The email has low priority.
High	The email has high priority.

Definition at line 4 of file MailPriority.cs.

◆ SmtpAccess

enum System.Net.Mail.SmtpAccess

strong

Specifies the level of access allowed to a Simple Mail Transport Protocol (SMTP) server.

Enumerator
None	No access to an SMTP host.
Connect	Connection to an SMTP host on the default port (port 25).
ConnectToUnrestrictedPort	Connection to an SMTP host on any port.

Definition at line 4 of file SmtpAccess.cs.

◆ SmtpDeliveryFormat

enum System.Net.Mail.SmtpDeliveryFormat

strong

The delivery format to use for sending outgoing e-mail using the Simple Mail Transport Protocol (SMTP).

Enumerator
SevenBit	A delivery format using 7-bit ASCII. The traditional delivery format used in the Simple Mail Transport Protocol (SMTP) for mail messages.
International	A delivery format where non-ASCII characters in the envelope and header fields used in the Simple Mail Transport Protocol (SMTP) for mail messages are encoded with UTF-8 characters. The extensions to support international e-mail are defined in IETF RFC 6530, 6531, and 6532.

Definition at line 4 of file SmtpDeliveryFormat.cs.

◆ SmtpDeliveryMethod

enum System.Net.Mail.SmtpDeliveryMethod

strong

Specifies how email messages are delivered.

Enumerator
Network	Email is sent through the network to an SMTP server.
SpecifiedPickupDirectory	Email is copied to the directory specified by the P:System.Net.Mail.SmtpClient.PickupDirectoryLocation property for delivery by an external application.
PickupDirectoryFromIis	Email is copied to the pickup directory used by a local Internet Information Services (IIS) for delivery.

Definition at line 4 of file SmtpDeliveryMethod.cs.

◆ SmtpStatusCode

enum System.Net.Mail.SmtpStatusCode

strong

Specifies the outcome of sending e-mail by using the T:System.Net.Mail.SmtpClient class.

Enumerator
SystemStatus	A system status or system Help reply.
HelpMessage	A Help message was returned by the service.
ServiceReady	The SMTP service is ready.
ServiceClosingTransmissionChannel	The SMTP service is closing the transmission channel.
Ok	The email was successfully sent to the SMTP service.
UserNotLocalWillForward	The user mailbox is not located on the receiving server; the server forwards the e-mail.
CannotVerifyUserWillAttemptDelivery	The specified user is not local, but the receiving SMTP service accepted the message and attempted to deliver it. This status code is defined in RFC 1123, which is available at http://www.ietf.org.
StartMailInput	The SMTP service is ready to receive the e-mail content.
ServiceNotAvailable	The SMTP service is not available; the server is closing the transmission channel.
MailboxBusy	The destination mailbox is in use.
LocalErrorInProcessing	The SMTP service cannot complete the request. This error can occur if the client's IP address cannot be resolved (that is, a reverse lookup failed). You can also receive this error if the client domain has been identified as an open relay or source for unsolicited e-mail (spam). For details, see RFC 2505, which is available at http://www.ietf.org.
InsufficientStorage	The SMTP service does not have sufficient storage to complete the request.
ClientNotPermitted	The client was not authenticated or is not allowed to send mail using the specified SMTP host.
CommandUnrecognized	The SMTP service does not recognize the specified command.
SyntaxError	The syntax used to specify a command or parameter is incorrect.
CommandNotImplemented	The SMTP service does not implement the specified command.
BadCommandSequence	The commands were sent in the incorrect sequence.
MustIssueStartTlsFirst	The SMTP server is configured to accept only TLS connections, and the SMTP client is attempting to connect by using a non-TLS connection. The solution is for the user to set EnableSsl=true on the SMTP Client.
CommandParameterNotImplemented	The SMTP service does not implement the specified command parameter.
MailboxUnavailable	The destination mailbox was not found or could not be accessed.
UserNotLocalTryAlternatePath	The user mailbox is not located on the receiving server. You should resend using the supplied address information.
ExceededStorageAllocation	The message is too large to be stored in the destination mailbox.
MailboxNameNotAllowed	The syntax used to specify the destination mailbox is incorrect.
TransactionFailed	The transaction failed.
GeneralFailure	The transaction could not occur. You receive this error when the specified SMTP host cannot be found.

Definition at line 4 of file SmtpStatusCode.cs.

Function Documentation

◆ SendCompletedEventHandler()

delegate void System.Net.Mail.SendCompletedEventHandler	(	object	sender,
		AsyncCompletedEventArgs	e
	)

Represents the method that will handle the E:System.Net.Mail.SmtpClient.SendCompleted event.

Parameters

sender	The source of the event.
e	An T:System.ComponentModel.AsyncCompletedEventArgs containing event data.

Classes

Enumerations

Functions

Enumeration Type Documentation

◆ DeliveryNotificationOptions

◆ MailPriority

◆ SmtpAccess

◆ SmtpDeliveryFormat

◆ SmtpDeliveryMethod

◆ SmtpStatusCode

Function Documentation

◆ SendCompletedEventHandler()