How can I use SMTP in my simple c# project so i can send emails to myself?

Question

I'm trying to implement SMTP in my app. The code should work but it does not. the user and pass are valid and for testing purposes only.

I've tried everything. Set the port to 25, 465 everything..

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;
using System.Net;
using System.Net.Mail;


namespace Email
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void Label2_Click(object sender, EventArgs e)
        {

        }

        private void Form1_Load(object sender, EventArgs e)
        {

        }

        private void Button1_Click(object sender, EventArgs e)
        {

            var smtp = new SmtpClient
            {
                Host = "smtp.gmail.com",
                Port = 587,
                EnableSsl = true,
                DeliveryMethod = SmtpDeliveryMethod.Network,
                UseDefaultCredentials = false,
                Credentials = new NetworkCredential("test1020dassf5@gmail.com", "KDO30VMjkd03JM0j")
            };
            MailMessage msg = new MailMessage("test1020dassf5@gmail.com", "test1020dassf5@gmail.com", textBox1.Text, textBox2.Text);
            {
                smtp.Send(msg);
            }
        }
    }
}

It gives me the error:

System.Net.Mail.SmtpException: The SMTP server requires a secure connection or the client was not authenticated. The server response was: 5.5.1 Authentication Required. Learn more at at System.Net.Mail.MailCommand.CheckResponse(SmtpStatusCode statusCode, String response) at System.Net.Mail.MailCommand.Send(SmtpConnection conn, Byte[] command, MailAddress from, Boolean allowUnicode) at System.Net.Mail.SmtpTransport.SendMail(MailAddress sender, MailAddressCollection recipients, String deliveryNotify, Boolean allowUnicode, SmtpFailedRecipientException& exception) at System.Net.Mail.SmtpClient.Send(MailMessage message)

....are those _actual_ credentials you just posted to a public site? — gunr2171, Jun 18 '19 at 18:12
@gunr2171 I like that the password appears to be random but ends in 456 — Camilo Terevinto, Jun 18 '19 at 18:16
@CamiloTerevinto, _sigh_, it's not random. It's legit, I just checked it. Flagging for mods. — gunr2171, Jun 18 '19 at 18:16
@CristianMihoc In the future, don't post your *actual* credentials to any service. You're just asking for trouble. — , Jun 18 '19 at 18:26
Well good news is the password no longer works. Hopefully the OP changed the password and not someone else. — gunr2171, Jun 18 '19 at 18:26
@CristianMihoc Your question was closed as a duplicate, which can be found at the top. — , Jun 18 '19 at 18:53
It is not a duplicate. i updated it before asking "Now can somebody answer my question?" — Cristian Mihoc, Jun 21 '19 at 16:16

How can I use SMTP in my simple c# project so i can send emails to myself?

0 Answers0