Send an email without having to enable less secure apps in google

Question

I made an e-mailer in C#, but you have to enable less secure apps in google. Is there a way around this? If not, how do other apps send e-mails securely without being classified as a less-secure app?

private void SendButton_Click(object sender, EventArgs e) {
       try {
           SmtpClient SmtpServer = new SmtpClient("smtp.gmail.com");

           mail.From = new MailAddress(myUsername);
           mail.To.Add(RecipientEmailBox.Text);
           mail.Subject = SubjectField.Text;
           mail.Body = MessageField.Text;

           SmtpServer.Port = 587;
           SmtpServer.Credentials = new 
           System.Net.NetworkCredential(myUsername, Login.password);
           SmtpServer.EnableSsl = true;

           SmtpServer.Send(mail);
           MessageBox.Show("Message Sent!");

       } catch (Exception ex) {
           MessageBox.Show(ex.ToString());
       }
}

I tried researching ways to get around this, but I couldn't find anything.

You could use a different SMTP server, for example, Yahoo. They may not require that step. — WhiteFire356, Oct 29 '19 at 02:12
Can you advise where you see that you need to enable "less secure apps"? — DiplomacyNotWar, Oct 29 '19 at 02:14
@John there is a google setting that allows less secure apps to authenticate with your email. If I don't allow this, I get an error. — Spencer1O1, Oct 29 '19 at 02:17
It looks like you can sign in with OAuth and use it for SMTP. See [here](https://developers.google.com/gmail/imap/xoauth2-protocol#smtp_protocol_exchange). I'm not sure how this works from C#, however. — DiplomacyNotWar, Oct 29 '19 at 02:19
@John I can't figure out how to sign in with OAuth in C# either... — Spencer1O1, Oct 29 '19 at 02:35
Maybe [this question](https://stackoverflow.com/questions/24195508/smtp-and-oauth-2) will help, although it does require using MailKit. — DiplomacyNotWar, Oct 29 '19 at 02:37
@John I have been trying for hours, and I have no idea how to implement that stuff, even with mailkit. — Spencer1O1, Oct 29 '19 at 22:35
Oh, awesome. You should add an answer here on how you did it. I'm sure it will be useful to someone in future! :) Sorry I couldn't be of more help, but it's not really something I've done. — DiplomacyNotWar, Oct 30 '19 at 01:43

score 1 · Accepted Answer · answered Apr 14 '20 at 14:00

1

I think this is answer for question.

You can use the Google OAuth API with C#. For how to do, read the guide.

answered Apr 14 '20 at 14:00

OnePage

81
1
13

Send an email without having to enable less secure apps in google

1 Answers1