通过Gmail在.NET中发送电子邮件

我不是依靠主人发送邮件，而是想通过我的Gmail帐户发送邮件。 电子邮件是个人化的电子邮件，我在我的节目上播放的乐队。 有可能吗？

Answer 1

一定要使用System.Net.Mail ，而不是弃用的System.Web.Mail 。 使用System.Web.Mail SSL是一件非常糟糕的事情。

 using System.Net; using System.Net.Mail; var fromAddress = new MailAddress("[e-mail]", "From Name"); var toAddress = new MailAddress("[e-mail]", "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); } 

Answer 2

以上的答案是行不通的。 您必须设置DeliveryMethod = SmtpDeliveryMethod.Network ，否则会返回“ 客户端未通过身份validation ”错误。 另外总是一个好主意，超时。

修改后的代码：

 using System.Net.Mail; using System.Net; var fromAddress = new MailAddress("[e-mail]", "From Name"); var toAddress = new MailAddress("[e-mail]", "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); } 

Answer 3

http://www.systemnetmail.com/可能是专门用于;单个 .NET命名空间的最荒谬完整的站点，但是它有一些你可能想知道的通过.NET发送邮件，无论是ASP.NET还是桌面。

http://www.systemwebmail.com/是该文章中的原始URL，但不应用于;.NET 2.0及更高版本。

Answer 4

在Gmail帐户中打开访问安全性较低的应用程序 。

看起来最近谷歌改变了它的安全政策。 最高评分的答案不再有效，除非您按照以下说明更改帐户设置： https ： //support.google.com/accounts/answer/6010255？hl = zh_CN

截至2016年3月，谷歌再次改变了设置位置！

Answer 5

这是发送电子邮件与attachement ..简单和短..

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

 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 [e-mail]"); mail.To.Add("[e-mail]"); 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 [e-mail]", "your password"); SmtpServer.EnableSsl = true; SmtpServer.Send(mail); } 

Answer 6

Google可能会阻止某些未使用现代安全标准的应用或设备进行login尝试。 由于这些应用程序和设备更容易侵入，阻止它们有助于保持您的帐户安全。

一些不支持最新安全标准的应用程序示例包括：

• iOS 6或更低版本的iPhone或iPad上的邮件应用程序
• 8.1版本之前的Windows手机上的邮件应用程序
• 一些桌面邮件客户端，如Microsoft Outlook和Mozilla Thunderbird

因此，您必须在Google帐户中启用安全性较低的login 。

login到Google帐户后，请转到：

https://myaccount.google.com/lesssecureapps
要么
https://www.google.com/settings/security/lesssecureapps

在C＃中，您可以使用以下代码：

 using (MailMessage mail = new MailMessage()) { mail.From = new MailAddress("[e-mail]"); mail.To.Add("[e-mail]"); 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("[e-mail]", "password"); smtp.EnableSsl = true; smtp.Send(mail); } } 

Answer 7

为了让我的工作，我必须启用我的Gmail帐户，使其他应用程序可以访问。 这是通过以下链接完成的： https ： //accounts.google.com/b/0/DisplayUnlockCaptcha

Answer 8

我希望这个代码能正常工作。 你可以试一试。

 // Include this. using System.Net.Mail; string fromAddress = "[e-mail]"; 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("[e-mail]"); //address to which mail will be sent. send_mail.To.Add(new MailAddress("[e-mail]"); //subject of the mail. send_mail.Subject = "put any subject here"; send_mail.Body = messageBody; client.Send(send_mail); 

Answer 9

这是我的版本：“ 使用Gmail在C＃中发送电子邮件 ”。

 using System; using System.Net; using System.Net.Mail; namespace SendMailViaGmail { class Program { static void Main(string[] args) { //Specify senders gmail address string SendersAddress = "[e-mail]"; //Specify The Address You want to sent Email To(can be any valid email address) string ReceiversAddress = "[e-mail]"; //Specify The password of gmial account u are using to sent mail(pw of [e-mail]) 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(); } } } } 

Answer 10

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("[e-mail]","password"); client.EnableSsl = true; client.Send(sendmsg); 

Answer 11

来源 ： 在ASP.NET C＃中发送电子邮件

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。

代码是非常自我解释，用您的电子邮件和密码值replace电子邮件和密码。

 public void SendEmail(string address, string subject, string message) { string email = "[e-mail]"; 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); } 

Answer 12

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; 

Answer 13

使用这种方式

 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("[e-mail]","MyPassWord"); client.Send(sendmsg); 

不要忘记这一点：

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

Answer 14

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

Answer 15

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("[e-mail]"); 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()); } } 

Answer 16

在Gmail / Outlook.com电子邮件上更改发件人：

为防止欺骗 – Gmail / Outlook.com不会让您从任意的用户帐户名称发送。

如果发件人数量有限，则可以按照这些说明进行操作，然后将“ From字段设置为该地址： 从其他地址发送邮件

如果你想从一个任意的电子邮件地址发送（如用户input他们的电子邮件的网站上的反馈表，你不希望他们直接发送电子邮件）关于你可以做的最好的是这样的：

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

这可以让你在你的电子邮件帐户中点击“回复”，在回复页面上回复你的乐队粉丝，但是他们不会收到实际的电子邮件，这可能会导致大量的垃圾邮件。

如果你在一个受控的环境中，这个工作很好，但请注意，即使指定了答复（我不知道是哪一个），我也看到有些电子邮件客户端发送到发件人地址。

Answer 17

我遇到了同样的问题，但是通过转到gmail的安全设置和允许安全性较低的应用程序解决了这个问题。 Domenic＆Donny的代码工作，但只有当您启用该设置

如果您已login（Google），则可以按照此链接并切换“打开”以进入“访问不太安全的应用程序”

Answer 18

 using System; using System.Net; using System.Net.Mail; namespace SendMailViaGmail { class Program { static void Main(string[] args) { //Specify senders gmail address string SendersAddress = "[e-mail]"; //Specify The Address You want to sent Email To(can be any valid email address) string ReceiversAddress = "[e-mail]"; //Specify The password of gmial account u are using to sent mail(pw of [e-mail]) 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(); } } } } 

Answer 19

以下是一个发送邮件并从web.config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="[e-mail]"/> </appSettings> <system.net> <mailSettings> <smtp deliveryMethod="Network" from="[e-mail]"> <network defaultCredentials="false" host="mail.exapmple.com" userName="[e-mail]" password="your_password" port="25"/> </smtp> </mailSettings> </system.net> 

Answer 20

对我来说问题是我的密码里有一个黑色的“\” ，我粘贴的时候没有意识到会造成问题。

Answer 21

试试这个

 public static bool Send(string receiverEmail, string ReceiverName, string subject, string body) { MailMessage mailMessage = new MailMessage(); MailAddress mailAddress = new MailAddress("[e-mail]", "Sender Name"); // [e-mail] = 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("[e-mail]", "pass") // [e-mail] = 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; }