首先要定義乙個郵件資訊的基類，如下所示：
///
/// base message class used for emails
///
public class message
#endregion
#region properties
///
/// whom the message is to
///
public virtual string to
///
/// the subject of the email
///
public virtual string subject
///
/// whom the message is from
///
public virtual string from
///
/// body of the text
///
public virtual string body
#endregion
}然後定義乙個郵件的傳送類，使用netmail的方式傳送郵件，傳送郵件時採用了.net中自帶的執行緒池，
通過多執行緒來實現非同步的傳送，**如下：
///
/// utility for sending an email
///
public class emailsender : message
#endregion
#region public functions
///
/// sends an email
///
/// the body of the message
public void sendmail(string message)
///
/// sends a piece of mail asynchronous
///
/// message to be sent
public void sendmailasync(string message));}
///
/// sends an email
///
public void sendmail()
;string addresscollection = to.split(splitter);
for (int x = 0; x < addresscollection.length; ++x)
if (!string.isnullorempty(cc))
}if (!string.isnullorempty(bcc))
}message.subject = subject;
message.from = new system.net.mail.mailaddress((from));
alternateview bodyview = alternateview.createalternateviewfromstring(body, null, mediatypenames.text.html);
foreach (linkedresource resource in embeddedresources)
message.alternateviews.add(bodyview);
= body;
message.priority = priority;
message.subjectencoding = system.text.encoding.getencoding("iso-8859-1");
message.bodyencoding = system.text.encoding.getencoding("iso-8859-1");
message.isbodyhtml = true;
foreach (attachment tempattachment in attachments)
system.net.mail.smtpclient smtp = new system.net.mail.smtpclient(server, port);
if (!string.isnullorempty(username) && !string.isnullorempty(password))
if (usessl)
smtp.enablessl = true;
else
smtp.enablessl = false;
smtp.send(message);}}
///
/// sends a piece of mail asynchronous
///
public void sendmailasync());}
#endregion
#region properties
///
/// any attachments that are included with this
/// message.
///
public listattachments
///
/// any attachment (usually images) that need to be embedded in the message
///
public listembeddedresources
///
/// the priority of this message
///
public mailpriority priority
///
/// server location
///
public string server
///
/// user name for the server
///
public string username
///
/// password for the server
///
public string password
///
/// port to send the information on
///
public int port
///
/// decides whether we are using starttls (ssl) or not
///
public bool usessl
///
/// carbon copy send (seperate email addresses with a comma)
///
public string cc
///
/// blind carbon copy send (seperate email addresses with a comma)
///
public string bcc
#endregion
}
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