I am generating an email via codebehind in C# in my asp.net application using the line below:

```
ClientScript.RegisterStartupScript(this.GetType(), "FormLoading", "window.open('mailto:AccountsPayable@xyzCorp.com?subject=Invoice for ABC Corp - " + ddlJobCode.SelectedItem.Text + " - Supporting Documentation', 'email');", true);

```

Is it possible to include an attachment programatically as well (if the user points to the attachment document via a browse button) ?