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
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
NO! there is no need to dispose the Thread object (BTW, the Thread class does not provide the Dispose method).
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;
to send over gmail, you need to use an encrypted connection. this is not possible with telnet alone, but you can use tools like openssl either connect using the starttls option in openssl to convert the plain connection to encrypted… openssl s_client -starttls smtp -connect smtp.gmail.com:587 -crlf -ign_eof or connect to a ssl sockect directly… … Read more
Create a custom app in you Gmail security settings. Log-in into Gmail with your account Navigate to https://security.google.com/settings/security/apppasswords In ‘select app’ choose ‘custom’, give it an arbitrary name and press generate It will give you 16 chars token. Use the token as password in combination with your full Gmail account and two factor authentication will … 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
The SmtpClient can be used by code: SmtpClient mailer = new SmtpClient(); mailer.Host = “mail.youroutgoingsmtpserver.com”; mailer.Credentials = new System.Net.NetworkCredential(“yourusername”, “yourpassword”);
mail.To and mail.From are readonly. Move them to the constructor. using System.Net.Mail; … MailMessage mail = new MailMessage(“you@yourcompany.example”, “user@hotmail.com”); 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);