It's possible you'll get notification messages through the official accounts of companies. These are definitely messages for things such as offer delivery dates and when charges are due. 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://zandertusqn.blue-blogs.com/43529669/line-oa-for-dummies