Testing Email Settings in Development Environment without SMTP server

When you are sending mail using SMTP Here's what the App.config settings look like :
<system.net>
<mailSettings>
<smtp>
<network host="smtp.domain.com"/>
</smtp>
</mailSettings>
</system.net>


Now just change the configuration as
<system.net>
<mailSettings>
<smtp deliveryMethod="SpecifiedPickupDirectory">
<specifiedPickupDirectory pickupDirectoryLocation="c:\temp\DropFolderName\"/>
</smtp>
</mailSettings>
</system.net>

What this setting will do is create the email file and drop it into the c:\temp\ DropFolderName\ folder. This setting can be used if you have your SMTP server watch a directory for new mail and it will then send it.
Now, when I send an email, like this:


public void SendMail()
{
SmtpClient smtpClient = new SmtpClient();
MailMessage mailMessage = new MailMessage("from@example.com", "to@example.com");
mailMessage.Subject = "This is the subject";
mailMessage.Body = "This is the body of message";
smtpClient.Send(mailMessage);
}

The mail message will get generated to c:\temp\DropFolderName\