I’m having trouble sending emails using C# and Gmail SMTP. Here’s my code:
var message = new MailMessage(sender.Text, recipient.Text, emailSubject.Text, emailContent.Text);
var client = new SmtpClient("smtp.gmail.com", 587);
client.Credentials = new NetworkCredential("[email protected]", "mypassword");
client.EnableSsl = true;
client.Send(message);
MessageBox.Show("Email sent successfully");
When I run this, I get a SmtpException saying “Failure sending mail.” I’ve double-checked my Gmail account settings and made sure to use the correct port (587). Any ideas on what might be causing this? I’m using Visual Studio 2015 if that helps. Thanks!
Have you considered using a dedicated email service provider like SendGrid or Mailgun? These services often provide more reliable SMTP servers and better deliverability rates than Gmail. They also offer C# libraries that simplify the email sending process.
I switched to SendGrid in a recent project and it solved many of the issues I was facing with Gmail SMTP. The setup is straightforward, and you get additional features like email tracking and analytics.
If you must use Gmail, make sure you’re using the latest version of .NET. Older versions sometimes have compatibility issues with Gmail’s security protocols. Also, double-check that your firewall or antivirus isn’t blocking the outgoing SMTP connection.
Let me know if you need more specific guidance on implementing these alternatives.
hey scarlettturner, u might need to enable ‘less secure app access’ in ur gmail settings. Also, check if 2FA is on - if it is, use an app password instead of ur regular one. I had similar issues and this fixed it for me. Good luck!
I’ve encountered this issue before when working on a project. The problem might be related to Google’s security measures. Have you tried using OAuth 2.0 for authentication instead of directly inputting your email and password? It’s more secure and generally recommended by Google.
In my experience, I set up OAuth 2.0 credentials in the Google Cloud Console, utilized the Google.Apis.Gmail.v1 NuGet package, implemented the OAuth flow to obtain an access token, and then used that token to authenticate the SMTP client. While this approach is initially more complex, it is much more reliable and secure in the long run. Additionally, it avoids issues with Google blocking less secure apps.
Let me know if you need further details or code examples.