.NET使用本地Outlook郵箱指定郵箱用戶名和密碼發送郵件

一、添加Microsoft.Office.Interop.Outlook引用

二、封裝發送郵件方法

using System;
using System.Configuration;
using System.Net.Mail;


namespace ServiceMe.Apps.Business.Common.Unity
{
    /// <summary>
    /// 發送郵件幫助類
    /// </summary>
    public class MailHelper
    {
        /// <summary>
        ///  郵箱用戶名
        /// </summary>
        private static readonly string mailUserName = ConfigurationManager.AppSettings["MailUserName"];
        /// <summary>
        ///  郵箱密碼
        /// </summary>
        private static readonly string mailUserPassword = ConfigurationManager.AppSettings["MailUserPassword"];
        /// <summary>
        /// 郵件服務器
        /// </summary>
        private static readonly string emailServer= ConfigurationManager.AppSettings["EmailServer"];
        /// <summary>
        /// 設置爲true容許安全鏈接本地客戶端發送郵件 ,  設置爲false不容許容許安全鏈接本地客戶端發送郵件 
        /// </summary>
        private static readonly string enableSsl = ConfigurationManager.AppSettings["EnableSsl"];
     
        /// <summary>
        /// 發送EMAIL
        /// </summary>
        /// <param name="sRecipientEmail">收件人地址</param>
        /// <param name="sSubject">主題</param>
        /// <param name="sMessage">內容</param>
        /// <param name="sSendName">發件人名稱</param>
        /// <returns>發送是否成功</returns>
        public static bool SendMail(string sRecipientEmail, string sSubject, string sMessage)
        {
            try
            {
                //郵件對象
                MailMessage emailMessage;

                //smtp客戶端對象
                SmtpClient client;

                string sSenderEmail = mailUserName;
                emailMessage = new MailMessage(sSenderEmail, sRecipientEmail, sSubject, sMessage);
                emailMessage.IsBodyHtml = true;
                emailMessage.SubjectEncoding = System.Text.Encoding.Default;
                emailMessage.BodyEncoding = System.Text.Encoding.Default;
                //加入
                emailMessage.Headers.Add("X-Priority", "3");
                emailMessage.Headers.Add("X-MSMail-Priority", "Normal");
                emailMessage.Headers.Add("X-Mailer", "Microsoft Outlook Express 6.00.2900.2869");
                emailMessage.Headers.Add("X-MimeOLE", "Produced By Microsoft MimeOLE V6.00.2900.2869");
                emailMessage.Headers.Add("ReturnReceipt", "1");

                //郵件發送客戶端
                client = new SmtpClient();
                //郵件服務器及賬戶信息
                client.Host = emailServer;
                //client.Host = "smtp.163.com";
                //client.Port = 465;
                //client.EnableSsl = true;
                System.Net.NetworkCredential Credential = new System.Net.NetworkCredential();

                //web.config中讀取郵件服務器用戶名和密碼信息
                Credential.UserName = mailUserName;
                Credential.Password = mailUserPassword;
                client.Credentials = Credential;
                client.EnableSsl =Convert.ToBoolean(enableSsl);
                //發送郵件
                client.Send(emailMessage);
            }
            catch(Exception ex)
            {
                //錯誤處理待定
                Log4NetHelper.WriteError($"發送郵件錯誤信息:{ex.Message},\r\n堆棧信息:{ex.StackTrace}");
                return false;
            }
            return true;
        }
    }
}

三、config添加配置文件

 <appSettings>
    <!--跨域配置-->
    <add key="cors_allowOrigins" value="*" />
    <add key="cors_allowHeaders" value="*" />
    <add key="cors_allowMethods" value="*" />
    <add key="EmailServer" value="smtp.office365.com"/>
    <add key="EnableSsl" value="true"/>
    <add key="MailUserName" value="xiaogang.tang@medalsoft.com" />
    <add key="MailUserPassword" value="HYqdp776" />
 </appSettings>

四、調用示例

 MailHelper.SendMail("xxxx@qq.com", "測試郵件", "請注意，這是一封.NET自動使用OutLook發送的測試郵件!");

五、發送結果