/// <summary>
    /// Sends emails to <paramref name="emailAddresses"/> in parallel
    /// </summary>
    /// <param name="emailAddresses">The recipients' email addresses</param>
    /// <param name="allAttachmentURLs">URLs to the file attachments</param>
    public void Orchestrate(string[] emailAddresses, string[] allAttachmentURLs)
    {
        string sub = subjectLine.ToString();
        string body = File.ReadAllText(bodyLink.ToString());

        //Use -1 for MaxDegreeOfParallelism to set a NO limit to the degree of concurrency
        var options = new ParallelOptions { MaxDegreeOfParallelism = -1 };


        //sharedLocals is a threadsafe variable where each parallel iteration saves its own data
        ConcurrentBag<SharedLocal> sharedLocals = new ConcurrentBag<SharedLocal>();

        //start parallel ForEachLoop on the emailAddresses
            Parallel.ForEach(emailAddresses, options, email =>
            {
                //each parallel iteration has its own sharedLocal variable
                SharedLocal sharedLocal = new SharedLocal();

                //this iteration will save its first data to its own sharedLocal
                sharedLocal.Counter = 1;

                string readline = email;
                string[] parts = readline.Split('|');
                string Name = parts[2].ToString();
                string toAddress = parts[3].ToString().Trim().Replace(" ", "");
                string attachment = parts[0].ToString().Trim();

                if (toAddress != "")
                {

                    //find the attachment file associated with this email address
                    long index = Array.FindIndex<string>(allAttachmentURLs, x => x.Contains(attachment));

                    if (index != -1)
                    {

                        //update a property in this iteration's own sharedLocal variable
                        sharedLocal.SBReport = allAttachmentURLs[index];


                        attachment = allAttachmentURLs[index];


                        //send mail
                        if (SendEmail(sub, body, toAddress, attachment, username, password, sharedLocal))
                        {
                            sharedLocal.SuccessCount++;
                            sharedLocal.SBSuccess = "Success!! >> " + DateTime.Now.ToString("dd-MMM-yyyy HH:mm:ss") + ": " + readline;

                        }
                        else
                        {
                            sharedLocal.FailedCount++;
                            sharedLocal.SBFailed = "Failed!! >> " + DateTime.Now.ToString("dd-MMM-yyyy HH:mm:ss") + ": " + readline;
                        }

                    }

                    else
                    {

                        //report on the result in this iteration's own sharedLocal
                        sharedLocal.SBReportError = "Attachment Not Found For : " + readline;
                    }
                }
                else
                {
                    //report on the result in this iteration's own sharedLocal
                    sharedLocal.SBReportError = "TO Address Issue For : " + readline;
                }


                //update the threadsafe ConcurrentBag with this iteration's own sharedLocal
                sharedLocals.Add(sharedLocal);
            });
        

    }