C# 如何发送电子邮件

Question

我想使用我的应用程序发送电子邮件。

我试过这个：

try
{
    MailMessage mail = new MailMessage();
    mail.From = new MailAddress(form);
    mail.To.Add(to);
    mail.Subject = subject;
    mail.Body = body;

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

但是当我发送邮件时，他告诉我“SMTP 服务器需要安全连接，或者客户端未经过身份验证。服务器响应是：5.7.0 需要身份验证。”

如何解决这个问题？

Answer 1

您可以使用以下代码通过gmail smtp客户端发送电子邮件：

string body = "your-email-body-here";
try
{
    using (var smtpClient = new SmtpClient("smtp.gmail.com", 587)) // default port is usually 587 in gmail
    {
        smtpClient.UseDefaultCredentials = false;
        smtpClient.Credentials = new NetworkCredential()
        {
            UserName = Config.Username, // your Gmail username
            Password = Config.Password, // your Gmail password
        };
        smtpClient.DeliveryMethod = SmtpDeliveryMethod.Network;
        smtpClient.EnableSsl = true;
        smtpClient.Send("[email protected]", "[email protected]", "Account verification", body);
    }
}
catch (Exception ex)
{
     Console.WriteLine(ex.Message);
     throw ex;
}