It's possible you'll get notification messages in the official accounts of firms. These are generally messages for such things as package deal shipping dates and when bills are thanks. 為何要做個簡單修改卻沒辦法存檔，加入好友的自動回覆部分，修改完所需要內容，都存檔了卻返回一直告知尚未完成部分將刪除，按了存檔依然沒有，所以編輯都沒辦法存檔變更，能不能處理一下，整個系統也太多bug了吧！ - ... https://hector81kji.blogscribble.com/36106891/a-secret-weapon-for-line-official-account