Send Email method with attachment (with bcc option)

Send Email method with attachment

static public void Send(string emails, string subject, string message, bool isHTML=true, params string[] attachmentPaths)
        {
            try
            {
                using (var client = new SmtpClient())
                {
                    var section = ConfigurationManager.GetSection("system.net/mailSettings/smtp") as SmtpSection;

                    // email message setting
                    MailMessage msg = new MailMessage();
                    msg.From = new MailAddress(section.Network.UserName, "Email address with title");
                    foreach (string email in emails.Split(','))
                    {
                        msg.To.Add(new MailAddress(email.Trim()));
                    }
                    msg.Subject = subject;
                    msg.Body = message;
                    msg.IsBodyHtml = isHTML;

                    if (!String.IsNullOrEmpty(System.Configuration.ConfigurationManager.AppSettings["BccAddress"]))
                        msg.Bcc.Add(new MailAddress(System.Configuration.ConfigurationManager.AppSettings["BccAddress"]));

                    #region To add attachments within the email
                    if (attachmentPaths != null)
                    {
                        string appPath = HostingEnvironment.ApplicationPhysicalPath;
                        if (attachmentPaths.Length > 0)
                        {
                            foreach (string attachmentPath in attachmentPaths)
                            {
                                // check if path is complete file path.
                                if (!string.IsNullOrEmpty(attachmentPath) && File.Exists(attachmentPath))
                                {
                                    msg.Attachments.Add(new Attachment(attachmentPath));
                                }
                                // check if directory exist for this path.
                                else if (!string.IsNullOrEmpty(attachmentPath) && Directory.Exists(attachmentPath))
                                {
                                    string[] files = Directory.GetFiles(attachmentPath);
                                    foreach (string fileName in files)
                                    {
                                        msg.Attachments.Add(new Attachment(fileName));
                                    }
                                }
                            }
                        }
                        else if (!string.IsNullOrEmpty(appPath + section.Network.TargetName) && File.Exists(appPath + section.Network.TargetName))
                        {
                            msg.Attachments.Add(new Attachment(appPath + section.Network.TargetName));
                        }
                    }
                    #endregion

                    // smtp client setting.
                    client.Host = section.Network.Host;
                    client.Port = section.Network.Port;
                    client.UseDefaultCredentials = false;
                    client.EnableSsl = section.Network.EnableSsl;
                    client.DeliveryMethod = SmtpDeliveryMethod.Network;
                    client.Credentials = new NetworkCredential(section.Network.UserName, section.Network.Password);
                    client.Send(msg);
                }
            }
            catch (Exception e)
            {
                WriteLog(e);
            }
        }