隱藏最後一次看到，沒有藍色勾選，閱讀郵件而不被抓住
If you want to view the messages without showing the last seen, this app is the right choice. You can make your friends believe that you are offline.
Don't worry about
- last seen
- blue tick
How to use
- open unseen app and enable notification permission, view the messages without being caught.