I think that if you are looking to test the SMTP it’s that you are looking for a way to validate your configuration and network availability without actually sending an email. Any way that’s what I needed since there were no dummy email that would of made sense. With the suggestion of my fellow developer … Read more
Gmail’s SMTP server requires you to authenticate your request with a valid gmail email/password combination. You do need SSL enabled as well. Without actually being able to see a dump of all your variables being passed in the best guess I can make is that your Credentials are invalid, make sure you’re using a valid … Read more
You won’t believe what fixed my problem. The Credentials property ss.Credentials = new NetworkCredential(“username”, “pass”); must be declared after ss.UseDefaultCredentials = false; So the final working code listing is SmtpClient ss = new SmtpClient(“smtp.gmail.com”, 587); ss.EnableSsl = true; ss.Timeout = 10000; ss.DeliveryMethod = SmtpDeliveryMethod.Network; ss.UseDefaultCredentials = false; ss.Credentials = new NetworkCredential(“username”, “pass”); MailMessage mm = … Read more
The original question was asked for .NET 4, but if it helps as of .NET 4.5 SmtpClient implements async awaitable method SendMailAsync. As a result, to send email asynchronously is as the following: public async Task SendEmail(string toEmailAddress, string emailSubject, string emailMessage) { using (var message = new MailMessage()) { message.To.Add(toEmailAddress); message.Subject = emailSubject; message.Body … Read more
This is what I do: MailMessage mail = new MailMessage(from, to, subject, message); mail.IsBodyHtml = true; SmtpClient client = new SmtpClient(“localhost”); client.Send(mail); Note that I set the mail message html to true: mail.IsBodyHtml = true;
One solution that is often mentioned is to add the image as an Attachment to the mail, and then reference it in the HTML mailbody using a cid: reference. However if you use the LinkedResources collection instead, the inline images will still appear just fine, but don’t show as additional attachments to the mail. That’s … Read more
gmail uses port 587 oClient.Port = 587; You may also want to set UseDefaultCredentials to false and explicitly declare username and password. By declaring it to be true, you are trying to log into your gmail account using your windows credentials. oClient.UseDefaultCredentials = false; oClient.Credentials = new NetworkCredential(“[email protected]”, “password”); Also, in gmail security, you will … Read more
mail.To and mail.From are readonly. Move them to the constructor. using System.Net.Mail; … MailMessage mail = new MailMessage(“[email protected]”, “[email protected]”); SmtpClient client = new SmtpClient(); client.Port = 25; client.DeliveryMethod = SmtpDeliveryMethod.Network; client.UseDefaultCredentials = false; client.Host = “smtp.gmail.com”; mail.Subject = “this is a test email.”; mail.Body = “this is my test email body”; client.Send(mail);