1. 使用SPUtility.SendEmail， 名稱空間:    Microsoft.SharePoint.Utilities  程式集:   Microsoft.SharePoint (in Microsoft.SharePoint.dll)：

StringDictionary headers = new StringDictionary();
 headers.add("to",[email protected]);
 headers.add("cc",[email protected]);
 headers.add("bcc",[email protected]
 
);
 headers.add("from",[email protected]);
 headers.add("subject","SPUtility.SendEmail with headers test");
 string bodyText ="Email body";
 SPUtility.SendEmail(web, headers, bodyText); 

2. 使用MailMessage， 名稱空間： System.Web.Mail 程式集：System.Web (in System.Web.dll)

 MailMessage MyMail = new MailMessage();
 MyMail.From = sFrom;
 MyMail.To = sTo;
 MyMail.Subject = sSubject;
 MyMail.Body = sBody;
 MyMail.Cc = sCc;
 MyMail.Bcc = sBcc;
 MyMail.UrlContentBase = sUrlContentBase;
 MyMail.UrlContentLocation = sUrlContentLocation;

     if (txtBodyEncoding.Text == Encoding.UTF7.EncodingName)
        MyMail.BodyEncoding = Encoding.UTF7;
     else if (txtBodyEncoding.Text == Encoding.UTF8.EncodingName)
        MyMail.BodyEncoding = Encoding.UTF8;
     else
        MyMail.BodyEncoding = Encoding.ASCII;

 switch (sBodyFormat.ToUpper())
     {
        case "HTML": 
           MyMail.BodyFormat = MailFormat.Html;
           break;
        default: 
           MyMail.BodyFormat = MailFormat.Text;
           break;
     }

     switch (sPriority.ToUpper())
     {
        case "HIGH": 
           MyMail.Priority = MailPriority.High;
           break;
        case "LOW": 
           MyMail.Priority = MailPriority.Low;
           break;
        default: 
           MyMail.Priority = MailPriority.Normal;
           break;
     }

     // Build an IList of mail attachments.
     if (sAttach != "")
     {
        char[] delim = new char[] {','};
        foreach (string sSubstr in sAttach.Split(delim))
        {
           MailAttachment MyAttachment = new MailAttachment(sSubstr);
           MyMail.Attachments.Add(MyAttachment);
        }
     }

     SmtpMail.SmtpServer = sMailServer;
     SmtpMail.Send(MyMail);