通过C＃通过Google Apps帐户发送电子邮件
我有一个标准的Google Apps帐户。我通过Google Apps设置了一个自定义域名。当我使用Gmail界面时，我可以通过Google Apps成功发送和接收电子邮件。但是，我想通过代码发送电子邮件。为了尝试这个，我一直在尝试下面的代码：通过C＃通过Google Apps帐户发送电子邮件
MailMessage mailMessage = new MailMessage();
mailMessage.To.Add("[email protected]");
mailMessage.Subject = "Test";
mailMessage.Body = "<html><body>This is a test</body></html>";
mailMessage.IsBodyHtml = true;
// Create the credentials to login to the gmail account associated with my custom domain
string sendEmailsFrom = "[email protected]";
string sendEmailsFromPassword = "password";
NetworkCredential cred = new NetworkCredential(sendEmailsFrom, sendEmailsFromPassword);
SmtpClient mailClient = new SmtpClient("smtp.gmail.com", 587);
mailClient.EnableSsl = true;
mailClient.DeliveryMethod = SmtpDeliveryMethod.Network;
mailClient.UseDefaultCredentials = false;
mailClient.Timeout = 20000;
mailClient.Credentials = cred;
mailClient.Send(mailMessage);
当达到发送方法，一个异常被抛出各国：
“SMTP服务器要求安全 连接或者客户端不是 认证。服务器响应 是：5.5.1认证要求。“
如何通过Google通过我的自定义域发送电子邮件？
谢谢！
没有必要对代码中的所有smtp设置进行硬编码。把它们放在web.config中。这样，您可以根据需要加密这些设置，并在不重新编译应用程序的情况下即时更改它们。
<configuration>
<system.net>
<mailSettings>
<smtp from="[email protected]" deliveryMethod="Network">
<network host="smtp.gmail.com" port="587"
userName="[email protected]" password="password"/>
</smtp>
</mailSettings>
</system.net>
</configuration>
末，当您发送电子邮件只是你SmtpClient启用SSL：
var message = new MailMessage("[email protected]");
// here is an important part:
message.From = new MailAddress("[email protected]", "Mailer");
// it's superfluous part here since from address is defined in .config file
// in my example. But since you don't use .config file, you will need it.
var client = new SmtpClient();
client.EnableSsl = true;
client.Send(message);
确保你是从与你试图在Gmail中进行身份验证的电子邮件地址发送电子邮件。
注意：从.NET 4.0开始，您可以在web.config中插入enableSsl =“true”，而不是在代码中进行设置。
端口更改为465
这是我在WPF 4
使用SmtpClient client = new SmtpClient();
client.Credentials = new NetworkCredential("[email protected]", "[email protected]$$w0rD");
client.Port = 587;
client.Host = "smtp.gmail.com";
client.EnableSsl = true;
try {
MailAddress
maFrom = new MailAddress("[email protected]", "Sender's Name", Encoding.UTF8),
maTo = new MailAddress("[email protected]", "Recipient's Name", Encoding.UTF8);
MailMessage mmsg = new MailMessage(maFrom.Address, maTo.Address);
mmsg.Body = "<html><body><h1>Some HTML Text for Test as BODY</h1></body></html>";
mmsg.BodyEncoding = Encoding.UTF8;
mmsg.IsBodyHtml = true;
mmsg.Subject = "Some Other Text as Subject";
mmsg.SubjectEncoding = Encoding.UTF8;
client.Send(mmsg);
MessageBox.Show("Done");
} catch (Exception ex) {
MessageBox.Show(ex.ToString(), ex.Message);
//throw;
}
手表防火墙和防病毒。这些令人毛骨悚然的事情往往阻止应用程序发送电子邮件 我使用迈克菲企业和我必须添加可执行文件名称（如Bazar。*为Bazar.exe和Bazar.vshost.exe）以便能够发送电子邮件...
有没有必要做任何事情。第一次登录您的当前帐户并按照说明操作。
您的问题将解决。这是因为您在Google应用中创建了该帐户但未登录。只需登录并按照说明操作即可。
我的代码连接到smtp.google.com使用TLS上的端口= 587（SSL应该是端口465），但仍需要EnableSsl =真
SmtpClient smtp = new SmtpClient();
smtp.Host = "smtp.gmail.com";
smtp.Port = 587;
smtp.EnableSsl = true;
smtp.UseDefaultCredentials = false;
NetworkCredential credentials = new NetworkCredential();
credentials.UserName = "INSERT EMAIL";
credentials.Password = "INSERT PASSWORD";
smtp.Credentials = credentials;
MailAddress addressFrom = new MailAddress(credentials.UserName);
MailAddress addressTo = new MailAddress("INSERT RECIPIENT");
MailMessage msg = new MailMessage(addressFrom, addressTo);
msg.Subject = "SUBJECT"
msg.Body = "BODY";
smtp.Send(msg);
通知上你的Google+帐户SUITE这些
重要先决条件- 确保您使用的用户名已清除首次登录时显示的CAPTCHA字验证测试。
- 确保帐户拥有安全的密码 - https://support.google.com/accounts/answer/32040
- 确保安全性较低的应用程序时所希望的帐户 - https://support.google.com/a/answer/6260879
是否端口465更好地工作，也许启用？ – Lucero 2009-04-16 21:01:35
上面的代码有什么问题？ – Marko 2011-02-19 12:38:10
我得到一个超时问题，但看着所有的代码smaples，似乎我的代码和设置是正确的。 – 2014-07-11 20:12:44