ASP.NET中使用System.Net.Mail发邮件

一、一般的邮件发送

public static void SendMail()//普通的邮件发送

{

    MailAddress from = new MailAddress("[email protected]");

    MailAddress to = new MailAddress("[email protected]");

    MailMessage message = new MailMessage(from, to);

    message.Subject = "邮件标题";

    message.Body = "邮件内容";

    MailAddress copy = new MailAddress("mailto:[email protected]");

    message.CC.Add(copy);

    SmtpClient client = new SmtpClient("SMTP Server");



    client.Credentials = CredentialCache.DefaultNetworkCredentials;

    client.Send(message);

}

二、带HTML格式的Email发送

public static void SendMail()//带HTML的邮件发送

{

    MailAddress from = new MailAddress("[email protected]");

    MailAddress to = new MailAddress("[email protected]");

    MailMessage message = new MailMessage(from, to);

    message.Subject = "邮件标题";



    string plainTextBody = "如果你邮件客户端不支持HTML格式，或者你切换到“普通文本”视图，将看到此内容";

    message.AlternateViews.Add(AlternateView.CreateAlternateViewFromString(plainTextBody, null, "text/plain"));

    string htmlBodyContent = "如果你的看到<b>这个</b>，说明你是在以 <span style=\"color:red\">HTML</span> 格式查看邮件<br><br>";

    htmlBodyContent += "<a href=\"http://www.baidu.com//">百度一下</a>";

    AlternateView htmlBody = AlternateView.CreateAlternateViewFromString(htmlBodyContent, null, "text/html");

    message.AlternateViews.Add(htmlBody);



    MailAddress copy = new MailAddress("mailto:[email protected] ");

    message.CC.Add(copy);

    SmtpClient client = new SmtpClient("SMTP Server");



    client.Credentials = CredentialCache.DefaultNetworkCredentials;

    client.Send(message);

}

三、带附件的邮件

public static void SendMail()//带HTML的邮件发送

{

    MailAddress from = new MailAddress("[email protected]");

    MailAddress to = new MailAddress("[email protected]");

    MailMessage message = new MailMessage(from, to);

    message.Subject = "邮件标题";



    string plainTextBody = "如果你邮件客户端不支持HTML格式，或者你切换到“普通文本”视图，将看到此内容";

    message.AlternateViews.Add(AlternateView.CreateAlternateViewFromString(plainTextBody, null, "text/plain"));

    string htmlBodyContent = "如果你的看到<b>这个</b>，说明你是在以 <span style=\"color:red\">HTML</span> 格式查看邮件<br><br>";

    htmlBodyContent += "<a href=\"http://www.baidu.com//">百度一下</a>";

    AlternateView htmlBody = AlternateView.CreateAlternateViewFromString(htmlBodyContent, null, "text/html");

    message.AlternateViews.Add(htmlBody);



    Attachment attachment = new Attachment("C:\\附件.rar");

    message.Attachments.Add(attachment);



    MailAddress copy = new MailAddress("mailto:[email protected]");

    message.CC.Add(copy);

    SmtpClient client = new SmtpClient("SMTP Server");



    client.Credentials = CredentialCache.DefaultNetworkCredentials;

    client.Send(message);

}

四、邮件为HTML，而且带图片

public static void SendMail()//带HTML，并且HTML中有图片的邮件发送

{

    MailAddress from = new MailAddress("[email protected]");

    MailAddress to = new MailAddress("[email protected]");



    MailMessage message = new MailMessage(from, to);

    message.Subject = "邮件标题";



    string plainTextBody = "如果你邮件客户端不支持HTML格式，或者你切换到“普通文本”视图，将看到此内容";

    message.AlternateViews.Add(AlternateView.CreateAlternateViewFromString(plainTextBody, null, "text/plain"));

    string htmlBodyContent = "如果你的看到<b>这个</b>，说明你是在以 <span style=\"color:red\">HTML</span> 格式查看邮件<br><br>";

    htmlBodyContent += "<a href=\"http://www.baidu.com//">百度一下</a><img src=\"cid:imageInEmail\"/>";

    AlternateView htmlBody = AlternateView.CreateAlternateViewFromString(htmlBodyContent, null, "text/html");

   

    LinkedResource lrImage = new LinkedResource("C:\\图片.jpg", System.Net.Mime.MediaTypeNames.Image.Jpeg);

    lrImage.ContentId = "imageInEmail"; //此处的ContentId 对应 htmlBodyContent 内容中的 cid: ,如果设置不正确,请不会显示图片

    htmlBody.LinkedResources.Add(lrImage);



    message.AlternateViews.Add(htmlBody);



    MailAddress copy = new MailAddress("mailto:[email protected]");

    message.CC.Add(copy);

    SmtpClient client = new SmtpClient("SMTP Server");



    client.Credentials = CredentialCache.DefaultNetworkCredentials;

    client.Send(message);

}

五、图片为动态生成

public static void SendMail()//带HTML，并且HTML中有图片的邮件发送

{

    MailAddress from = new MailAddress("[email protected]");

    MailAddress to = new MailAddress("[email protected]");

    MailMessage message = new MailMessage(from, to);

    message.Subject = "邮件标题";



    string plainTextBody = "如果你邮件客户端不支持HTML格式，或者你切换到“普通文本”视图，将看到此内容";

    message.AlternateViews.Add(AlternateView.CreateAlternateViewFromString(plainTextBody, null, "text/plain"));

    string htmlBodyContent = "如果你的看到<b>这个</b>，说明你是在以 <span style=\"color:red\">HTML</span> 格式查看邮件<br><br>";

    htmlBodyContent += "<a href=\"http://www.baidu.com//">百度一下</a><img src=\"cid:imageInEmail\"/>";

    AlternateView htmlBody = AlternateView.CreateAlternateViewFromString(htmlBodyContent, null, "text/html");



    MemoryStream imgStream = GetImage();

    imgStream.Position = 0;//非常重要，否则图片为空！在邮件里显示红叉

    LinkedResource lrImage = new LinkedResource(imgStream, System.Net.Mime.MediaTypeNames.Image.Jpeg);

    lrImage.ContentId = "imageInEmail"; //此处的ContentId 对应 htmlBodyContent 内容中的 cid: ，如果设置不正确，请不会显示图片

    htmlBody.LinkedResources.Add(lrImage);



    message.AlternateViews.Add(htmlBody);



    MailAddress copy = new MailAddress("mailto:[email protected]");

    message.CC.Add(copy);

    SmtpClient client = new SmtpClient("SMTP Server");



    client.Credentials = CredentialCache.DefaultNetworkCredentials;

    client.Send(message);

}



public static MemoryStream GetImage()

{

    //Code here... ...

}