jmail.Message Jmail = new jmail.Message();

??????????? DateTime t = DateTime.Now;
??????????? String Subject = " From EMail .net";
??????????? String body = "你好科學12:15";
??????????? String FromEmail = "jsyxo@163.com";
??????????? String ToEmail = "jjsyxo@163.com";
??????????? //Silent屬性：如果設置為true,JMail不會拋出例外錯誤. JMail. Send( () 會根據操作結果返回true或false
??????????? Jmail.Silent = true;
??????????? //Jmail創建的日志，前提loging屬性設置為true
??????????? Jmail.Logging = true;
??????????? //字符集，缺省為"US-ASCII"
??????????? Jmail.Charset = "GB2312";
??????????? //信件的contentype. 缺省是"text/plain"） : 字符串如果你以HTML格式發送郵件, 改為"text/html"即可。
??????????? Jmail.ContentType = "text/html";
??????????? //添加收件人
??????????? Jmail.AddRecipient(ToEmail, "", "");
??????????? Jmail.From = FromEmail;
??????????? //發件人郵件用戶名
??????????? Jmail.MailServerUserName = "jsyxo";
??????????? //發件人郵件密碼
??????????? Jmail.MailServerPassWord = "111111";
??????????? //設置郵件標題
??????????? Jmail.Subject = Subject;
??????????? //郵件添加附件,(多附件的話，可以再加一條Jmail.AddAttachment( "c:\\test.jpg",true,null);)就可以搞定了。［注］：加了附件，講把上面的Jmail.ContentType="text/html";刪掉。否則會在郵件里出現亂碼。
??????????? //Jmail.AddAttachment("c:\\test.jpg", true, null);
??????????? //郵件內容
??????????? Jmail.Body = body + t.ToString();
??????????? //Jmail發送的方法
??????????? Jmail.Send("smtp.163.com", false);
??????????? Jmail.Close();

=====================
用的是Jmail4.3


經過測試沒問題可以多發！

1.安裝jmail4.3

2.找到jmail.dll（Program Files\Dimac\w3JMail4下）

3.執行Program Files\Microsoft Visual Studio .NET\FrameworkSDK\Bin\ildasm.exe（可使用Visual Studio .Net 2003 命令提示),

格式如下：tlbimp c:\Program Files\Dimac\w3JMail4\jmail.dll /out:myJmail.dll /namespace:myJmail

就是我在Visual Studio .Net 2005命令提示下編譯執行 tlbimp c:\Program Files\Dimac\w3JMail4\jmail.dll /out:myJmail.dll /namespace:myJmail

我的代碼如下：
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Web.Mail;
using System.Web.Util;
using myJmail;

using Tool;
using Manager;
using Entity;

public partial class UserControls_Jmaill : System.Web.UI.UserControl
{
??? string strCurrentPath = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString();
??? protected void Page_Load(object sender, EventArgs e)
??? {
??? }
??? protected void btnSend_Click(object sender, EventArgs e)
??? {
??????? try
??????? {
??????????? this.lblTitle.Text = "發送郵件控件";
??????????? myJmail.Message Jmail = new myJmail.Message();
??????????? DateTime t = DateTime.Now;
??????????? String Subject = this.txtTitle.Text;
??????????? String body = this.txtContent.Text;
??????????? String FromEmail = this.txtFormEmail.Text;//你的email
??????????? String ToEmail = this.txtToEmail.Text;//對方的email
??????????? String AddAttachment = this.FileUploadSubject.PostedFile.FileName;
??????????? //Silent屬性：如果設置為true,JMail不會拋出例外錯誤. JMail. Send( () 會根據操作結果返回true或false
??????????? Jmail.Silent = true;
??????????? //Jmail創建的日志，前提loging屬性設置為true
??????????? Jmail.Logging = true;
??????????? //字符集，缺省為"US-ASCII"
??????????? Jmail.Charset = "GB2312";
??????????? //信件的contentype. 缺省是"text/plain"） : 字符串如果你以HTML格式發送郵件, 改為"text/html"即可。
??????????? Jmail.ContentType = "text/html";
??????????? //添加收件人
??????????? Jmail.AddRecipient(ToEmail, "", "");
??????????? Jmail.From = FromEmail;
??????????? //發件人郵件用戶名
??????????? Jmail.MailServerUserName = FromEmail;
??????????? //發件人郵件密碼
??????????? Jmail.MailServerPassWord = "kongwei";
??????????? //設置郵件標題
??????????? Jmail.Subject = Subject;
??????????? //郵件添加附件,(多附件的話，可以再加一條Jmail.AddAttachment( "c:\\test.jpg",true,null);)就可以搞定了。［注］：加了附件，講把上面的Jmail.ContentType="text/html";刪掉。否則會在郵件里出現亂碼。
??????????? Jmail.AddAttachment(AddAttachment, true, null);
??????????? //郵件內容
??????????? Jmail.Body = body + t.ToString();
??????????? //Jmail發送的方法
??????????? Jmail.Send("smtp.163.com", false);
??????????? Jmail.Close();
??????? }
??????? catch (Exception ex)
??????? {
??????????? this.lblMessage.Text = ex.Message;
??????? }
??? }

錯了上面的不能發多個應該是這個
using System;
using System.Data;
using System.Configuration;
using System.Collections;
using System.Web;
using System.Web.Security;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Web.UI.WebControls.WebParts;
using System.Web.UI.HtmlControls;
using System.Web.Mail;
using System.Web.Util;
using myJmail;

using Tool;
using Manager;
using Entity;

public partial class UserControls_Jmaill : System.Web.UI.UserControl
{
??? string strCurrentPath = DateTime.Now.Year.ToString() + DateTime.Now.Month.ToString();
??? protected void Page_Load(object sender, EventArgs e)
??? {
??? }
??? protected void btnSend_Click(object sender, EventArgs e)
??? {
??????? try
??????? {
??????????? this.lblTitle.Text = "發送郵件控件";
?
??????????? myJmail.Message Jmail = new myJmail.Message();
??????????? DateTime t = DateTime.Now;
??????????? String Subject = this.txtTitle.Text;
??????????? String body = this.txtContent.Text;
??????????? string FromEmail = this.txtFormEmail.Text.Trim();//你的email
??????????? String ToEmail = this.txtToEmail.Text;//對方的email
??????????? String AddAttachment = this.FileUploadSubject.PostedFile.FileName;
??????????? //Silent屬性：如果設置為true,JMail不會拋出例外錯誤. JMail. Send( () 會根據操作結果返回true或false
??????????? Jmail.Silent = true;
??????????? //Jmail創建的日志，前提loging屬性設置為true
??????????? Jmail.Logging = true;
??????????? //字符集，缺省為"US-ASCII"
??????????? Jmail.Charset = "GB2312";
??????????? //信件的contentype. 缺省是"text/plain"） : 字符串如果你以HTML格式發送郵件, 改為"text/html"即可。
????????? //? Jmail.ContentType = "text/html";
??????????? ToEmail = ToEmail.Replace("\n", "").Replace(" ", "");
??????????? string[] str = ToEmail.Split(',');

??????????? for (int i = 0; i < str.Length; i++)
??????????? {
??????????????? //添加收件人
??????????????? Jmail.AddRecipient(str[i], "", "");
???????????????
??????????????? Jmail.From = FromEmail;
??????????????? //發件人郵件用戶名
??????????????? Jmail.MailServerUserName = FromEmail;
??????????????? //發件人郵件密碼
??????????????? Jmail.MailServerPassWord = "";//FromEmail郵箱的登陸密碼
??????????????? //設置郵件標題
??????????????? Jmail.Subject = Subject;
??????????????? //郵件添加附件,(多附件的話，可以再加一條Jmail.AddAttachment( "c:\\test.jpg",true,null);)就可以搞定了。［注］：加了附件，講把上面的Jmail.ContentType="text/html";刪掉。否則會在郵件里出現亂碼。
??????????????? Jmail.AddAttachment(AddAttachment, true, null);
??????????????? //郵件內容
??????????????? Jmail.Body = body + t.ToString();
??????????????? //加密文件
??????????????? //Jmail.PGPEncrypt = true;
??????????????? //Jmail發送的方法
??????????????? Jmail.Send("smtp.163.com", false);
??????????????? Jmail.ClearAttachments();
??????????????? Jmail.ClearRecipients();
??????????? }
??????????? Jmail.Close();
??????? }
??????? catch (Exception ex)
??????? {
??????????? this.lblMessage.Text = ex.Message;
??????? }
??? }
?
}

轉載于:https://www.cnblogs.com/Nina-piaoye/archive/2006/08/14/476373.html

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