提问



我没有依赖我的主机发送电子邮件,而是考虑使用我的Gmail帐户发送电子邮件。这些电子邮件是我在节目中播放的乐队的个性化电子邮件。有可能吗?

最佳参考


一定要使用System.Net.Mail,而不是弃用的System.Web.Mail。使用System.Web.Mail执行SSL是一个混乱的hacky扩展。


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

var fromAddress = new MailAddress("from@gmail.com", "From Name");
var toAddress = new MailAddress("to@example.com", "To Name");
const string fromPassword = "fromPassword";
const string subject = "Subject";
const string body = "Body";

var smtp = new SmtpClient
{
    Host = "smtp.gmail.com",
    Port = 587,
    EnableSsl = true,
    DeliveryMethod = SmtpDeliveryMethod.Network,
    UseDefaultCredentials = false,
    Credentials = new NetworkCredential(fromAddress.Address, fromPassword)
};
using (var message = new MailMessage(fromAddress, toAddress)
{
    Subject = subject,
    Body = body
})
{
    smtp.Send(message);
}

其它参考1


上面的答案不起作用。您必须设置DeliveryMethod = SmtpDeliveryMethod.Network,否则它将返回客户端未经过身份验证错误。此外,最好放一个时间到。


修改后的代码:


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

var fromAddress = new MailAddress("from@gmail.com", "From Name");
var toAddress = new MailAddress("to@yahoo.com", "To Name");
const string fromPassword = "password";
const string subject = "test";
const string body = "Hey now!!";

var smtp = new SmtpClient
{
    Host = "smtp.gmail.com",
    Port = 587,
    EnableSsl = true,
    DeliveryMethod = SmtpDeliveryMethod.Network,
    Credentials = new NetworkCredential(fromAddress.Address, fromPassword),
    Timeout = 20000
};
using (var message = new MailMessage(fromAddress, toAddress)
{
    Subject = subject,
    Body = body
})
{
    smtp.Send(message);
}

其它参考2


对于gmail帐户中从服务器首先为安全性较低的应用程序启用访问权限的其他答案。


看起来最近谷歌改变了它的安全政策。在您按照此处所述更改帐户设置之前,评分最高的答案不再有效:https://support.google.com/accounts/answer/6010255?hl=zh-CN [25] [26]


[27]


截至2016年3月,谷歌再次更改了设置位置!

其它参考3


http://www.systemnetmail.com/可能是一个专门用于单 .NET命名空间的最荒谬的完整站点...但它有一些你可能想知道的关于通过.NET发送邮件的一切,无论是ASP.NET还是桌面。[28]


http://www.systemwebmail.com/是该帖子中的原始网址,但不应用于.NET 2.0及更高版本。 [29]

其它参考4


这是发送带附件的电子邮件..简单和简短..


来源:http://coding-issues.blogspot.in/2012/11/sending-email-with-attachments-from-c.html [30]


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

public void email_send()
{
    MailMessage mail = new MailMessage();
    SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");
    mail.From = new MailAddress("your mail@gmail.com");
    mail.To.Add("to_mail@gmail.com");
    mail.Subject = "Test Mail - 1";
    mail.Body = "mail with attachment";

    System.Net.Mail.Attachment attachment;
    attachment = new System.Net.Mail.Attachment("c:/textfile.txt");
    mail.Attachments.Add(attachment);

    SmtpServer.Port = 587;
    SmtpServer.Credentials = new System.Net.NetworkCredential("your mail@gmail.com", "your password");
    SmtpServer.EnableSsl = true;

    SmtpServer.Send(mail);

}

其它参考5


Google可能阻止某些不使用现代安全标准的应用或设备尝试登录。由于这些应用和设备更容易入侵,因此阻止它们有助于确保您的帐户更安全。


一些不支持最新安全标准的应用程序示例包括:



  • 适用于iOS 6或更低版本的iPhone或iPad上的邮件应用

  • 8.1版本之前的Windows手机上的邮件应用程序

  • 某些桌面邮件客户端,如Microsoft Outlook和Mozilla Thunderbird



因此,您必须在Google帐户中启用安全登录


登录Google帐户后,请转到:


https://myaccount.google.com/lesssecureapps



https://www.google.com/settings/security/lesssecureapps
[31] [32]


在C#中,您可以使用以下代码:


using (MailMessage mail = new MailMessage())
{
    mail.From = new MailAddress("email@gmail.com");
    mail.To.Add("somebody@domain.com");
    mail.Subject = "Hello World";
    mail.Body = "<h1>Hello</h1>";
    mail.IsBodyHtml = true;
    mail.Attachments.Add(new Attachment("C:\\file.zip"));

    using (SmtpClient smtp = new SmtpClient("smtp.gmail.com", 587))
    {
        smtp.Credentials = new NetworkCredential("email@gmail.com", "password");
        smtp.EnableSsl = true;
        smtp.Send(mail);
    }
}

其它参考6


这是我的版本:使用Gmail在C#中发送电子邮件。[33]


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

namespace SendMailViaGmail
{
   class Program
   {
   static void Main(string[] args)
   {

      //Specify senders gmail address
      string SendersAddress = "Sendersaddress@gmail.com";
      //Specify The Address You want to sent Email To(can be any valid email address)
      string ReceiversAddress = "ReceiversAddress@yahoo.com";
      //Specify The password of gmial account u are using to sent mail(pw of sender@gmail.com)
      const string SendersPassword = "Password";
      //Write the subject of ur mail
      const string subject = "Testing";
      //Write the contents of your mail
      const string body = "Hi This Is my Mail From Gmail";

      try
      {
        //we will use Smtp client which allows us to send email using SMTP Protocol
        //i have specified the properties of SmtpClient smtp within{}
        //gmails smtp server name is smtp.gmail.com and port number is 587
        SmtpClient smtp = new SmtpClient
        {
           Host = "smtp.gmail.com",
           Port = 587,
           EnableSsl = true,
           DeliveryMethod = SmtpDeliveryMethod.Network,
           Credentials    = new NetworkCredential(SendersAddress, SendersPassword),
           Timeout = 3000
        };

        //MailMessage represents a mail message
        //it is 4 parameters(From,TO,subject,body)

        MailMessage message = new MailMessage(SendersAddress, ReceiversAddress, subject, body);
        /*WE use smtp sever we specified above to send the message(MailMessage message)*/

        smtp.Send(message);
        Console.WriteLine("Message Sent Successfully");
        Console.ReadKey();
     }

     catch (Exception ex)
     {
        Console.WriteLine(ex.Message);
        Console.ReadKey();
     }
    }
   }
 }

其它参考7


为了让我能够工作,我必须启用我的Gmail帐户才能让其他应用程序获得访问权限。这是通过使用此链接启用安全性较低的应用和完成的:
https://accounts.google.com/b/0/DisplayUnlockCaptcha[34]

其它参考8


我希望这段代码能正常工作。你可以尝试一下。


// Include this.                
using System.Net.Mail;

string fromAddress = "xyz@gmail.com";
string mailPassword = "*****";       // Mail id password from where mail will be sent.
string messageBody = "Write the body of the message here.";


// Create smtp connection.
SmtpClient client = new SmtpClient();
client.Port = 587;//outgoing port for the mail.
client.Host = "smtp.gmail.com";
client.EnableSsl = true;
client.Timeout = 10000;
client.DeliveryMethod = SmtpDeliveryMethod.Network;
client.UseDefaultCredentials = false;
client.Credentials = new System.Net.NetworkCredential(fromAddress, mailPassword);


// Fill the mail form.
var send_mail = new MailMessage();

send_mail.IsBodyHtml = true;
//address from where mail will be sent.
send_mail.From = new MailAddress("from@gmail.com");
//address to which mail will be sent.           
send_mail.To.Add(new MailAddress("to@example.com");
//subject of the mail.
send_mail.Subject = "put any subject here";

send_mail.Body = messageBody;
client.Send(send_mail);

其它参考9


包括这个,


using System.Net.Mail;


接着,


MailMessage sendmsg = new MailMessage(SendersAddress, ReceiversAddress, subject, body); 
SmtpClient client = new SmtpClient("smtp.gmail.com");

client.Port = Convert.ToInt16("587");
client.Credentials = new System.Net.NetworkCredential("mail-id@gmail.com","password");
client.EnableSsl = true;

client.Send(sendmsg);

其它参考10


来源:在ASP.NET C#中发送电子邮件[35]


下面是使用C#发送邮件的示例工作代码,在下面的示例中,我使用的是谷歌的smtp服务器。


代码非常自我解释,用您的电子邮件和密码值替换电子邮件和密码。


public void SendEmail(string address, string subject, string message)
{
    string email = "yrshaikh.mail@gmail.com";
    string password = "put-your-GMAIL-password-here";

    var loginInfo = new NetworkCredential(email, password);
    var msg = new MailMessage();
    var smtpClient = new SmtpClient("smtp.gmail.com", 587);

    msg.From = new MailAddress(email);
    msg.To.Add(new MailAddress(address));
    msg.Subject = subject;
    msg.Body = message;
    msg.IsBodyHtml = true;

    smtpClient.EnableSsl = true;
    smtpClient.UseDefaultCredentials = false;
    smtpClient.Credentials = loginInfo;
    smtpClient.Send(msg);
}

其它参考11


如果您想发送背景电子邮件,请执行以下操作


 public void SendEmail(string address, string subject, string message)
 {
 Thread threadSendMails;
 threadSendMails = new Thread(delegate()
    {

      //Place your Code here 

     });
  threadSendMails.IsBackground = true;
  threadSendMails.Start();
}


并添加命名空间


using System.Threading;

其它参考12


用这种方式


MailMessage sendmsg = new MailMessage(SendersAddress, ReceiversAddress, subject, body); 
SmtpClient client = new SmtpClient("smtp.gmail.com");

client.Port = Convert.ToInt32("587");
client.EnableSsl = true;
client.Credentials = new System.Net.NetworkCredential("mail-id@gmail.com","MyPassWord");
client.Send(sendmsg);


别忘了这个:


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

其它参考13


一个提示!
检查发件人收件箱,也许您需要允许不太安全的应用。
请参阅:https://www.google.com/settings/security/lesssecureapps [36]

其它参考14


尝试这个,


    private void button1_Click(object sender, EventArgs e)
    {
        try
        {
            MailMessage mail = new MailMessage();
            SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");

            mail.From = new MailAddress("your_email_address@gmail.com");
            mail.To.Add("to_address");
            mail.Subject = "Test Mail";
            mail.Body = "This is for testing SMTP mail from GMAIL";

            SmtpServer.Port = 587;
            SmtpServer.Credentials = new System.Net.NetworkCredential("username", "password");
            SmtpServer.EnableSsl = true;

            SmtpServer.Send(mail);
            MessageBox.Show("mail Send");
        }
        catch (Exception ex)
        {
            MessageBox.Show(ex.ToString());
        }
    }

其它参考15


在Gmail/Outlook.com电子邮件中更改发件人:


为了防止欺骗 - Gmail/Outlook.com不允许您从任意用户帐户名发送。


如果您的发件人数量有限,则可以按照这些说明进行操作,然后将From字段设置为此地址:从其他地址发送邮件[37]


如果您想从任意电子邮件地址发送(例如用户输入电子邮件的网站上的反馈表单,而您不希望他们直接通过电子邮件发送给您),您可以做的最好的事情是:


        msg.ReplyToList.Add(new System.Net.Mail.MailAddress(email, friendlyName));


这样您就可以在电子邮件帐户中点击回复,在反馈页面上回复您乐队的粉丝,但他们不会收到您的实际电子邮件,这可能会导致大量的垃圾邮件。


如果您处于受控环境中这很好用,但请注意我已经看到一些电子邮件客户端发送到地址,即使指定了回复(我不知道哪个)。

其它参考16


我遇到了同样的问题,但通过转到gmail的安全设置和允许安全性较低的应用来解决问题。
Domenic& D代码Donny工作,但只有你启用了那个设置


如果您已登录(对Google),则可以关注此链接并切换开启以获取访问不太安全的应用 [38]

其它参考17


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

namespace SendMailViaGmail
{
   class Program
   {
   static void Main(string[] args)
   {

      //Specify senders gmail address
      string SendersAddress = "Sendersaddress@gmail.com";
      //Specify The Address You want to sent Email To(can be any valid email address)
      string ReceiversAddress = "ReceiversAddress@yahoo.com";
      //Specify The password of gmial account u are using to sent mail(pw of sender@gmail.com)
      const string SendersPassword = "Password";
      //Write the subject of ur mail
      const string subject = "Testing";
      //Write the contents of your mail
      const string body = "Hi This Is my Mail From Gmail";

      try
      {
        //we will use Smtp client which allows us to send email using SMTP Protocol
        //i have specified the properties of SmtpClient smtp within{}
        //gmails smtp server name is smtp.gmail.com and port number is 587
        SmtpClient smtp = new SmtpClient
        {
           Host = "smtp.gmail.com",
           Port = 587,
           EnableSsl = true,
           DeliveryMethod = SmtpDeliveryMethod.Network,
           Credentials = new NetworkCredential(SendersAddress, SendersPassword),
           Timeout = 3000
        };

        //MailMessage represents a mail message
        //it is 4 parameters(From,TO,subject,body)

        MailMessage message = new MailMessage(SendersAddress, ReceiversAddress, subject, body);
        /*WE use smtp sever we specified above to send the message(MailMessage message)*/

        smtp.Send(message);
        Console.WriteLine("Message Sent Successfully");
        Console.ReadKey();
     }
     catch (Exception ex)
     {
        Console.WriteLine(ex.Message);
        Console.ReadKey();
     }
}
}
}

其它参考18


以下是一种从web.config发送邮件和获取凭据的方法:


public static string SendEmail(string To, string Subject, string Msg, bool bodyHtml = false, bool test = false, Stream AttachmentStream = null, string AttachmentType = null, string AttachmentFileName = null)
{
    try
    {
        System.Net.Mail.MailMessage newMsg = new System.Net.Mail.MailMessage(System.Configuration.ConfigurationManager.AppSettings["mailCfg"], To, Subject, Msg);
        newMsg.BodyEncoding = System.Text.Encoding.UTF8;
        newMsg.HeadersEncoding = System.Text.Encoding.UTF8;
        newMsg.SubjectEncoding = System.Text.Encoding.UTF8;

        System.Net.Mail.SmtpClient smtpClient = new System.Net.Mail.SmtpClient();
        if (AttachmentStream != null && AttachmentType != null && AttachmentFileName != null)
        {
            System.Net.Mail.Attachment attachment = new System.Net.Mail.Attachment(AttachmentStream, AttachmentFileName);
            System.Net.Mime.ContentDisposition disposition = attachment.ContentDisposition;
            disposition.FileName = AttachmentFileName;
            disposition.DispositionType = System.Net.Mime.DispositionTypeNames.Attachment;

            newMsg.Attachments.Add(attachment);
        }
        if (test)
        {
            smtpClient.PickupDirectoryLocation = "C:\\TestEmail";
            smtpClient.DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.SpecifiedPickupDirectory;
        }
        else
        {
            //smtpClient.EnableSsl = true;
        }

        newMsg.IsBodyHtml = bodyHtml;
        smtpClient.Send(newMsg);
        return SENT_OK;
    }
    catch (Exception ex)
    {

        return "Error: " + ex.Message
             + "<br/><br/>Inner Exception: "
             + ex.InnerException;
    }

}


和web.config中的相应部分:


<appSettings>
    <add key="mailCfg" value="yourmail@example.com"/>
</appSettings>
<system.net>
  <mailSettings>
    <smtp deliveryMethod="Network" from="yourmail@example.com">
      <network defaultCredentials="false" host="mail.exapmple.com" userName="yourmail@example.com" password="your_password" port="25"/>
    </smtp>
  </mailSettings>
</system.net>

其它参考19


对我来说问题是我的密码中有一个黑色的\\,我复制粘贴而没有意识到它会导致问题。

其它参考20


试试这个


public static bool Send(string receiverEmail, string ReceiverName, string subject, string body)
{
        MailMessage mailMessage = new MailMessage();
        MailAddress mailAddress = new MailAddress("abc@gmail.com", "Sender Name"); // abc@gmail.com = input Sender Email Address 
        mailMessage.From = mailAddress;
        mailAddress = new MailAddress(receiverEmail, ReceiverName);
        mailMessage.To.Add(mailAddress);
        mailMessage.Subject = subject;
        mailMessage.Body = body;
        mailMessage.IsBodyHtml = true;

        SmtpClient mailSender = new SmtpClient("smtp.gmail.com", 587)
        {
            EnableSsl = true,
            UseDefaultCredentials = false,
            DeliveryMethod = System.Net.Mail.SmtpDeliveryMethod.Network,
            Credentials = new NetworkCredential("abc@gmail.com", "pass")   // abc@gmail.com = input sender email address  
                                                                           //pass = sender email password
        };

        try
        {
            mailSender.Send(mailMessage);
            return true;
        }
        catch (SmtpFailedRecipientException ex)
        { }
        catch (SmtpException ex)
        { }
        finally
        {
            mailSender = null;
            mailMessage.Dispose();
        }
        return false;
}

其它参考21


从另一个答案复制,上述方法有效但gmail始终用实际的发送gmail帐户替换发件人和回复电子邮件。显然有一个工作:


http://karmic-development.blogspot.in/2013/10/send-email-from-aspnet-using-gmail-as.html[40]


3.在帐户标签中,单击添加您拥有的其他电子邮件地址链接,然后验证


或者可能这[41]


更新3:读者Derek Bennett说:解决方案是进入你的Gmail设置:帐户和默认帐户而不是你的Gmail帐户。这将导致gmail用任何默认帐户重写发件人字段电子邮件地址是。