Chapter 27. The System.Web.Mail Namespace
The System.Web.Mail namespace
allows you to send email messages from your ASP.NET application. This
capability can use the built-in SMTP service included with IIS or an
arbitrary SMTP server, and is similar to the CDO component used in
traditional ASP development. The SMTP service in IIS maps its Inbox
and Outbox to directories on the server. Message transfer is handled
so that the Outbox is always empty and the Inbox never has an
incoming queue. Note that in order to use these features, you must
correctly configure the default SMTP server in IIS Manager so that it
will relay messages to the Internet. If you do not take this step
your mail will never be delivered, even though no exceptions will be
raised in your code.
Messages and attachments are encapsulated in
MailMessage and MailAttachment
objects and sent using the SmtpMail helper class,
which provides a single Send( ) method. Figure 27-1 shows the types in this namespace.
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