Wednesday, May 16, 2012

Send mail using Microsoft Outlook

Already posted how to mail using SMTP; but now in this implemenation will show how to send mail using Microsoft Outlook object.
But there a basic rule of these implementation:
  1. Create the required objects.
  2. Add recepient, main subject, mail body, attachment.
  3. Send mail and validate.
  4. Release resources.
using Outlook = Microsoft.Office.Interop.Outlook;

public void SendTestMail()
        Outlook.Application otApp = new Outlook.Application();// create outlook object
        Outlook.NameSpace ns = otApp.Session;
        Outlook.MailItem otMsg = (Outlook.MailItem)otApp.CreateItem(Outlook.OlItemType.olMailItem); // Create mail object
        Outlook.Inspector oInspector = otMsg.GetInspector;
        Outlook.Recipient otRecip = (Outlook.Recipient)otMsg.Recipients.Add("");
        otRecip.Resolve();// validate recipient address
        otMsg.Subject = "test subject";
        otMsg.Body = "text message";
        String sSource = "C:\\Test.txt";
        String sDisplayName = "TestAttachment";
        int iPos = (int)otMsg.Body.Length + 1;
        int iAttType = (int)Outlook.OlAttachmentType.olByValue;  
        Outlook.Attachment oAttach = otMsg.Attachments.Add(sSource,iAttType,iPos,sDisplayName); // add attachment
        otMsg.Send(); // Send Mail
        otRecip = null;
        otAttach = null;
        otMsg = null;
        otApp = null;
    catch (Exception e)
        Console.WriteLine("{0} Exception caught: ", e);
    return 0;


  1. Hi Kuntal Saha,
    Same coding is working fine in my system. But when i published in IIS it is not working :(. Could you please help me in this.

    1. Hi Raj,
      I would rather suggest you creating a service seperately to handle mail communication. Consume the service whenever you wanna send mail.


  2. just tried this code, doesnt do anything for me :(

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  4. It is because some antivirus programs often consider auto-emails that are trying to be sent or downloaded as phishing, spam, or virus carriers and thus block them. microsoft support number