1、添加Microsoft.Office.Interop.Outlook引用

2、封装发送邮件方法

using System;using System.Configuration;using System.Net.Mail;namespace ServiceMe.Apps.Business.Common.Unity{    /// <summary>    /// 发送邮件帮助类    /// </summary>    public class MailHelper    {    　　　　　#region 发送邮件        /// <summary>        /// 发送邮件        /// </summary>        /// <param name="sendusermail"></param>        /// <param name="mailtitle"></param>        /// <param name="mailcontent"></param>        /// <returns></returns>        public static bool Send(string sendusermail, string mailtitle, string mailcontent)        {            try            {                Microsoft.Office.Interop.Outlook.Application olApp = new Microsoft.Office.Interop.Outlook.Application();                Microsoft.Office.Interop.Outlook.MailItem mailItem = (Microsoft.Office.Interop.Outlook.MailItem)olApp.CreateItem(Microsoft.Office.Interop.Outlook.OlItemType.olMailItem);                mailItem.To = sendusermail;                mailItem.Subject = mailtitle;                mailItem.BodyFormat = Microsoft.Office.Interop.Outlook.OlBodyFormat.olFormatHTML;                mailItem.HTMLBody = mailcontent;                ((Microsoft.Office.Interop.Outlook._MailItem)mailItem).Send();                mailItem = null;                olApp = null;            }            catch (Exception e)            {                Console.WriteLine(e);                return false;            }            return true;        }        #endregion        }}

3、调用示例

MailHelper.Send("xxxx@163.com", "测试邮件", "请注意，这是一封测试邮件!");

4、示例结果