How do I tell my application to send an email?

Question

How would I tell my application to send an email to a subscriber? How would I send it every week starting from the time the appication is launched.

Answer 1

Use the classes in the System.Net.Mail namespace to send emails from your app. Specifically, the MailMessage class serves this purpose.

To send emails periodically, you can use a timer (use System.Timers.Timer, for example) or you could use the built-in Windows task scheduler, which has rich functionality and runs as a service, so that you don't need to keep an interactive session open on your machine. I can give you a more detailed answer if you provide more details about the type of app you're developing.

Answer 2

I haven't created anything directly like this myself but I've seen solutions that use a Scheduled Task on the Server which are set to run on a certain date/time a small script that carries out what is required. This assumes you have your own server though...

Answer 3

I use this method to use gmail, and it works well for me.

var fromAddress = new MailAddress("From");
                var toAddress = new MailAddress("To");
                string fromPassword = textBox4.Text;
                const string subject = "Test";
                const string body = "Test Finished";

                var smtp = new SmtpClient
                {
                    Host = "smtp.gmail.com",
                    Port = 587,
                    EnableSsl = true,
                    DeliveryMethod = SmtpDeliveryMethod.Network,
                    UseDefaultCredentials = false,
                    Credentials = new System.Net.NetworkCredential(fromAddress.Address, fromPassword)
                };
                using (var message = new MailMessage(fromAddress, toAddress)
                {
                    Subject = subject,
                    Body = body
                })
                {
                    Attachment attachf = new Attachment("C:\\file.txt");
                    message.Attachments.Add(attachf);
                    smtp.Send(message);
                }
            }