How can I put email messages in a queue when SMTP server is down?

Question

I have a big problem with my SMTP server for sending emails. It's down often.

At this point I am using this code:

MailMessage mailMsg = new MailMessage();
mailMsg.From = new MailAddress("[email protected]");
mailMsg.To.Add("[email protected]");
mailMsg.Subject = "...";
mailMsg.IsBodyHtml = true;
mailMsg.BodyEncoding = Encoding.UTF8;
mailMsg.Body = "Mail";
mailMsg.Priority = MailPriority.High;
SmtpClient client = new SmtpClient();
client.Credentials = new NetworkCredential("[email protected]", "password");
client.Port = 456;         
client.Host = "smtp.gmail.com";
client.EnableSsl = true;
client.Send(mailMsg);

But, when my SMTP server is down I want to put all the emails in a queue and when it recovers I want to send them one a time. Is there any way how to do this programatically in C#?

Answer 1

Gmail's SMTP server is down often ? That is strange.

If emailing is vital, I suggest you to use a local queuing service or build your own based on Microsoft Queuing system.

But if it's so vital, I would try to solve my SMTP problem instead.