(?<=^Final-Recipient: rfc822;)(.*)$

grep "(?<=^Final-Recipient: rfc822;)(.*)$" *.bad >> emails.txt

start = emailbody.IndexOf("To:");

                        if (start < 0)
                            start = 0;


     string emailExpression = @"([a-zA-Z0-9_.]+)@([a-zA-Z0-9_.]+).([a-zA-Z]{2,3})";
      System.Text.RegularExpressions.Regex regExp = new System.Text.RegularExpressions.Regex(emailExpression);

                        if (regExp.IsMatch(eamilbody, start))

               {
                     System.Text.RegularExpressions.Match match = regExp.Match(emailbody, start);
                            string email = match.Value;

                 }