Hi there,

I've tried the following example to send an e-mail via Outlook and it works fine: -

Code:
using System;
using System.Reflection;     // to use Missing.Value
// TO DO: If you use the Microsoft Outlook 11.0 Object Library, uncomment the following line.
//using Outlook = Microsoft.Office.Interop.Outlook;

namespace SendHTMLMail
{
	public class Class1
	{
		public static int Main(string[] args)
		{
			try
			{
				// Create the Outlook application.
				Outlook.Application  oApp = new Outlook.Application();

				// Get the NameSpace and Logon information.
				Outlook.NameSpace oNS = oApp.GetNamespace("mapi");

				// Log on by using a dialog box to choose the profile.
				oNS.Logon(Missing.Value, Missing.Value, true, true);

				// Alternate logon method that uses a specific profile.
				// TODO: If you use this logon method,
				//  change the profile name to an appropriate value.
				//oNS.Logon("YourValidProfile", Missing.Value, false, true);

				// Create a new mail item.
				Outlook.MailItem oMsg = (Outlook.MailItem)oApp.CreateItem(Outlook.OlItemType.olMailItem);

				// Set the subject.
				oMsg.Subject = "Send Using OOM in C#";

				// Set HTMLBody.
				String sHtml;
				sHtml = "<HTML>\n" +
					"<HEAD>\n" +
					"<TITLE>Sample GIF</TITLE>\n" +
					"</HEAD>\n" +
					"<BODY><P>\n" +
					"<h1><Font Color=Green>Inline graphics</Font></h1></P>\n" +
					"</BODY>\n" +
					"</HTML>";
				oMsg.HTMLBody = sHtml;

				// Add a recipient.
				Outlook.Recipients oRecips = (Outlook.Recipients)oMsg.Recipients;
				// TODO: Change the recipient in the next line if necessary.
				Outlook.Recipient oRecip = (Outlook.Recipient)oRecips.Add("someone@somewhere");
				oRecip.Resolve();

				// Send.
				oMsg.Send();

				// Log off.
				oNS.Logoff();

				// Clean up.
				oRecip = null;
				oRecips = null;
				oMsg = null;
				oNS = null;
				oApp = null;
			}

				// Simple error handling.
			catch (Exception e)
			{
				Console.WriteLine("{0} Exception caught.", e);
			}

			// Default return value.
			return 0;

		}
	}
}
Although it works I am shown 2 dialog boxes from Outlook which I have to respond to.

Is there a way to stop these from appearing, or another way to send an e-mail using C#?

Regards