c# Send Email using Process.Start

Question

I want to send simple email with no attachment using default email application.

I know it can be done using Process.Start, but I cannot get it to work. Here is what I have so far:

string mailto = string.Format("mailto:{0}?Subject={1}&Body={2}", "[email protected]", "Subject of message", "This is a body of a message"); System.Diagnostics.Process.Start(mailto);

But it simply opens Outlook message with pre-written text. I want to directly send this without having user to manually click "Send" button. What am I missing?

Thank you

Why are expecting that to be like that? I'm glad no random application can send email using my email program without me knowing or seeing anything. — Maarten
– Maarten, Commented Oct 16, 2014 at 12:03
If problem occurs within the application, I want to automatically send error log to system administrator. — Robert J.
– Robert J., Commented Oct 16, 2014 at 12:05
Automating Outlook via COM Interop is the best way if for whatever reason you must use Outlook. For the command line see; Sending email from Command-line via outlook without having to click send. For a general solution for other e-mail clients, your out of luck - there is no such common interface. — Alex K.
– Alex K., Commented Oct 16, 2014 at 12:09
The process start will not fully automate the sending of the email. It will only open it ready to send (as you have seen) — landoncz
– landoncz, Commented Oct 16, 2014 at 12:10

Ignac · Accepted Answer · 2016-01-13 15:36:47Z

You need to do this :

string mailto = string.Format("mailto:{0}?Subject={1}&Body={2}", "[email protected]", "Subject of message", "This is a body of a message"); mailto = Uri.EscapeUriString(mailto); System.Diagnostics.Process.Start(mailto);

How is this different from what OP is already doing? This will not send the message automatically. It will simply be shown on the screen.

Community · Accepted Answer · 2017-05-23 12:23:25Z

I'm not sure about Process.Start() this will probably always only open a mail message in the default Mail-App and not send it automatically.

But there may be two alternatives:

Send directly via SmtpClient Class
using Outlook.Interop

Josh Correia · Accepted Answer · 2021-08-09 21:12:48Z

You need to do this:

SmtpClient m_objSmtpServer = new SmtpClient(); MailMessage objMail = new MailMessage(); m_objSmtpServer.Host = "YOURHOSTNAME"; m_objSmtpServer.Port = YOUR PORT NOS; objMail.From = new MailAddress(fromaddress); objMail.To.Add("TOADDRESS"); objMail.Subject = subject; objMail.Body = description; m_objSmtpServer.Send(objMail);

Yes I have seen this solution, but I want to achieve this using Process.Start
I believe that using Process.Start you will not be able to do it .It will simply open the Outlook.

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c# Send Email using Process.Start

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