track open rate of email newsletter

>>I am sending...

You can't, the best you can hope for is to ask them to inform you they have done so.

If you have told your customers that you will be placing becon images in newsletters, then you are within your right to place a transparent 1px by 1px image inside your email.  Point this becon image to be an ASPX page that can keep track in a database of the number of hits to it.

Cheers,

G.

Its a tricky thing to do, because most mail clients will block images, because thats how spammers confirm a working email address, so your stats, if using images, wont be completely accurate.

Another way would be to require a read receipt, but a lot of web based emails dont support this, and even if it does, some people just ignore it or choose not to send it.

You could use a cheeky JavaScript that launched on page load to call a handler page that updated your database, but the user could be reading mail whilst offline, or the script could be blocked.

If this is a request from the marketing team, I'd advise them that there's no certain way of knowing how many people have read the newsletter :)

hi darshan_derasari,

how can i return the image in response.

I am using the below coding but not getting the image in return:

 PowerGeneralFunction objGen;
   
    string strQuery = "";

    protected void Page_Load(object sender, EventArgs e)
    {
        if (Request.QueryString["campid"] == null)
        {
            if (Request.QueryString["campid"].ToString() == "")
            {
                Response.Redirect("http://www.cocoona.ae/");
            }
        }

        if (Request.QueryString["emailid"] == null)
        {
            if (Request.QueryString["emailid"].ToString() == "")
            {
                Response.Redirect("http://www.cocoona.ae/");
            }
        }

        this.Camp_Details();
    }
    protected string Camp_Details()
    {
        int result = 0;
        objGen = new PowerGeneralFunction();


        try
        {
            strQuery = "Insert into campaignRead (campid,nemail,addedip,addeddate,readnl) values ( " + Request.QueryString["campid"].ToString().Replace("'", "'") + ",'" + Request.QueryString["emailid"].ToString().Replace("'", "'") + "','" + this.FinalIP() + "','" + System.DateTime.Now + "',1)";
            result = objGen.InsertUpdateDeleteCommand(strQuery);
            if (result > 0)
            {
                return "http://www.cocoona.ae/images/knews.jpg";
            }

        }
        catch (Exception ex)
        {
            return "http://www.cocoona.ae/images/knews.jpg";

        }
        finally
        {
            strQuery = "";
           
            objGen = null;
        }

        return "http://www.cocoona.ae/images/knews.jpg";
    }

    public string FinalIP()
    {
        string strHostName = "";
        strHostName = System.Net.Dns.GetHostName();
        IPHostEntry ipEntry = System.Net.Dns.GetHostEntry(strHostName);
        IPAddress[] addr = ipEntry.AddressList; return addr[addr.Length - 1].ToString();
    }

thanks