C# How to get the send of behalf email address in

Question

I'm trying to get the sender email address from email that is send using another email address. The sender as shows in outlook is [e-mail] on behalf of User Name [[e-mail]]. The MAPI object has a method SentOnBehalfOfName that returns "User Name" but not the email address. Does anyone know how to receive [e-mail] field?

Answer 1

Do you have http://www.dimastr.com/outspy/ ? It is a useful tool for drilling down into MAPI objects in outlook.

Also, if you use http://www.dimastr.com/redemption/ you can get at a SentOnBehalfOfEmailAddress property on the IRDOMail object.

Answer 2

using System;
using System.Runtime.InteropServices;
using System.Diagnostics;
using System.Reflection;

namespace Helpers
{
    internal class EmailHelper
    {
        public static string GetSenderEmailAddress(Microsoft.Office.Interop.Outlook.MailItem mapiObject)
        {
            Microsoft.Office.Interop.Outlook.PropertyAccessor oPA;
            string propName = "http://schemas.microsoft.com/mapi/proptag/0x0065001F";
            oPA = mapiObject.PropertyAccessor;
            string email = oPA.GetProperty(propName).ToString();
            return email;
        }
    }
}

Answer 3

If you are using outlook 2007 you have the MailItem.PropertyAccessor and you can get the PR_SENDER_EMAIL_ADDRESS mapi property.

Marcus