如何使用c＃发送电子邮件？

Question

I am trying to make a Windows Form that sends an email when the user clicks a button, but every time I try, an exception is being raised: Failure sending mail. What is wrong with my code?

    private void button1_Click(object sender, EventArgs e)
    {
        SmtpClient smtpClient = new SmtpClient();
        NetworkCredential basicCredential =
            new NetworkCredential("username", "password");
        MailMessage message = new MailMessage();
        MailAddress fromAddress = new MailAddress("myemailadress@gmail.com");

        smtpClient.Host = "smpt.gmail.com";
        smtpClient.UseDefaultCredentials = false;
        smtpClient.Credentials = basicCredential;

        message.From = fromAddress;
        message.Subject = "your subject";
        //Set IsBodyHtml to true means you can send HTML email.
        message.IsBodyHtml = true;
        message.Body = "<h1>your message body</h1>";
        message.To.Add("towhomisend@yahoo.com");

        try
        {
            smtpClient.Send(message);
        }
        catch (Exception ex)
        {
            //Error, could not send the message
            MessageBox.Show(ex.Message);
        }
    }

Answer 1

使用"smtp.gmail.com"而不是"smpt.gmail.com"

Answer 2

1) Check whether SMTP settings are correct and server is configured correctly (Host & Port Settings)

2)Check whether credentials(user name and password) are correct

3)Check whether firewall is blocking the request

4).Check port 587 If it is blocked in firewall

Port 587: This is the default mail submission port. When a mail client or server is submitting an email to be routed by a proper mail server, it should always use this port.

Answer 3

The 'smtpClient.Host = "smpt.gmail.com";' part is incorrect.

Change "smpt.gmail.com" to "smtp.gmail.com"

"SMTP" - not - "SMPT"

Answer 4

use "smtp.gmail.com" instead of "smpt.gmail.com"

That aside Confirm one more thing, You have to enable email from other program in your gmail. When you try to send once, you will get a notification in you email ID. You have to enable it there.