通过 Gmail 在 .NET 中发送电子邮件
题
我不再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。这些电子邮件是发送给我在节目中演奏的乐队的个性化电子邮件。可以做吗?
解决方案
请务必使用 System.Net.Mail
, ,不是已弃用的 System.Web.Mail
. 。使用 SSL 进行 System.Web.Mail
是一团乱七八糟的黑客扩展。
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);
}
其他提示
上面的答案不起作用。你必须设置 DeliveryMethod = SmtpDeliveryMethod.Network
否则它会返回一个“客户端未经过身份验证“ 错误。另外,设置超时总是一个好主意。
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);
}
让其他答案首先“从服务器”工作 为安全性较低的应用程序启用访问权限 在 Gmail 帐户中。
看起来谷歌最近改变了它的安全政策。评分最高的答案不再有效,除非您按照此处所述更改帐户设置: https://support.google.com/accounts/answer/6010255?hl=en-GB
截至2016年3月,google再次更改设置位置!
这是发送带有附件的电子邮件..简单又短..
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 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);
}
Google 可能会阻止某些不使用现代安全标准的应用程序或设备的登录尝试。由于这些应用程序和设备更容易入侵,阻止它们有助于确保您的帐户更安全。
不支持最新安全标准的应用程序的一些示例包括:
- 装有 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,例如 Microsoft Outlook 和 Mozilla Thunderbird
因此,您必须启用 不太安全的登录 在你的谷歌帐户中。
登录谷歌帐户后,转到:
https://myaccount.google.com/lesssecureapps
或者
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("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);
}
}
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 = "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();
}
}
}
}
为了让它正常工作,我必须启用我的 Gmail 帐户,以便其他应用程序能够获得访问权限。这是通过“启用不太安全的应用程序”来完成的 还 使用此链接:https://accounts.google.com/b/0/DisplayUnlockCaptcha
我希望这段代码能够正常工作。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);
包括这个,
using System.Net.Mail;
进而,
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);
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谷歌的 smtp 服务器。
该代码非常不言自明,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);
}
如果您想发送后台电子邮件,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;
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);
不要忘记这一点:
using System.Net;
using System.Net.Mail;
一点提示!检查发件人收件箱,也许您需要允许安全性较低的应用程序。看: https://www.google.com/settings/security/lesssecureapps
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());
}
}
更改 Gmail / Outlook.com 电子邮件的发件人:
为了防止欺骗 - Gmail/Outlook.com 不允许您从任意用户帐户名发送邮件。
如果您的发件人数量有限,您可以按照这些说明进行操作,然后设置 From
字段到此地址: 从不同的地址发送邮件
如果您想从任意电子邮件地址发送邮件(例如网站上的反馈表,用户在其中输入电子邮件,而您不希望他们直接向您发送电子邮件),那么您可以做的最好的事情是:
msg.ReplyToList.Add(new System.Net.Mail.MailAddress(email, friendlyName));
这样,您只需在电子邮件帐户中点击“回复”即可在反馈页面上回复乐队的粉丝,但他们不会收到您的实际电子邮件,这可能会导致大量垃圾邮件。
如果您处于受控环境中,这效果很好,但请注意,我看到一些电子邮件客户端即使指定了回复(我不知道是哪一个)也会发送到发件人地址。
我也遇到了同样的问题,但是通过gmail的安全设置解决了这个问题 允许安全性较低的应用程序。Domenic & Donny 的代码有效,但前提是您启用了该设置
如果您已登录(Google),您可以关注 这 链接和切换 “打开” 为了 “访问不太安全的应用程序”
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();
}
}
}
}
以下是发送邮件并从 web.config 获取凭据的一种方法:
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;
}
}
以及 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>
对我来说问题是我的 密码有一个黑斜杠“\” 在其中,我复制粘贴了它,但没有意识到它会引起问题。
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;
}
复制自 另一个答案, ,上述方法有效,但 gmail 始终将“发件人”和“回复”电子邮件替换为实际的发送 gmail 帐户。但显然有一个解决方法:
http://karmic-development.blogspot.in/2013/10/send-email-from-aspnet-using-gmail-as.html
”3.在“帐户”选项卡中,单击链接“添加您拥有的另一个电子邮件地址”,然后进行验证”
或者可能 这
更新3:读者德里克·贝内特 (Derek Bennett) 表示:“解决方案是进入您的 Gmail 设置:帐户,然后将您的 Gmail 帐户以外的帐户“设为默认”。这将导致 gmail 使用默认帐户的电子邮件地址重写“发件人”字段。”
你可以试试Mailkit。它为您提供更好、更先进的发送邮件功能。您可以从以下位置找到更多信息 这 这是一个例子
MimeMessage message = new MimeMessage();
message.From.Add(new MailboxAddress("FromName", "YOU_FROM_ADDRESS@gmail.com"));
message.To.Add(new MailboxAddress("ToName", "YOU_TO_ADDRESS@gmail.com"));
message.Subject = "MyEmailSubject";
message.Body = new TextPart("plain")
{
Text = @"MyEmailBodyOnlyTextPart"
};
using (var client = new SmtpClient())
{
client.Connect("SERVER", 25); // 25 is port you can change accordingly
// Note: since we don't have an OAuth2 token, disable
// the XOAUTH2 authentication mechanism.
client.AuthenticationMechanisms.Remove("XOAUTH2");
// Note: only needed if the SMTP server requires authentication
client.Authenticate("YOUR_USER_NAME", "YOUR_PASSWORD");
client.Send(message);
client.Disconnect(true);
}