c# - 如何从 C# 向 Gmail 发送电子邮件

Question

protected void BtnSubmit_Click(object sender, EventArgs e)
{
    GetAllUsersName U = new GetAllUsersName();
    string Email = U.GetUSEREmail(TxtEmailPass.Text);

    SmtpClient mySmtpClient = new SmtpClient("smtp.gmail.com", 587);
    mySmtpClient.EnableSsl = true;
    mySmtpClient.UseDefaultCredentials = false;


    mySmtpClient.Credentials = new NetworkCredential("Projects@gmail.com", "Pro123456789");
    mySmtpClient.EnableSsl = true;
    MailMessage msg = new MailMessage("Projects@gmail.com", Email, "Password", "your password is:");



    mySmtpClient.Send(msg);

}

这是我的代码，但它一直告诉我:

The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required.

Answer 1

您的代码看起来不错。如果这是一个新帐户，请确保更改密码 - 至少一次。 Gmail 可能正在找您更改密码。