public BaseReturn <bool> sendMailReply(Email mail, string replymessage) { BaseReturn <bool> baseObject = new BaseReturn <bool>(); try { Encoding.RegisterProvider(CodePagesEncodingProvider.Instance); var enc1252 = Encoding.GetEncoding(1252); mail.To = mail.From; mail.From = Config.serviceMailId; mail.Body = replymessage; var msg = new AE.Net.Mail.MailMessage { Subject = "RE : " + mail.Subject, Body = mail.Body, ContentType = "text/html", From = new MailAddress(mail.From) }; msg.To.Add(new MailAddress(mail.To)); msg.ReplyTo.Add(new MailAddress(mail.From)); mail.CC.Split(',').ToList().ForEach(addr => { if (addr.Trim() != "") { msg.Cc.Add(new MailAddress(addr)); } }); var msgStr = new StringWriter(); msg.Save(msgStr); var result = _service.Users.Messages.Send(new Message { ThreadId = mail.MailId, Id = mail.MailId, Raw = CommonFunctions.Base64UrlEncode(msgStr.ToString()) }, "me").Execute(); saveReplyMailInfo(mail); baseObject.Success = true; baseObject.Data = true; } catch (Exception ex) { baseObject.Success = false; baseObject.Message = "Error Occured."; } return(baseObject); }