This application is the solution.
What is INVISIBLE to facilitate this task with a simple, fast and secure. You will be able to see all your mail using an incognito.
That is, for a short period of time, can become invisible and read any messages you have sent to your contacts through chat or chat groups.
To start using the invisible (for all groups and their contact) just activate the Off button, then switch to On.
For More Info Google Play
Supported Android
{4.0.3 and UP}
Supported Android Version:-
Ice Cream Sandwich (4.0.3–4.0.4)- Jelly Bean (4.1–4.3.1)- KitKat (4.4–4.4.4)- Lollipop (5.0–5.0.2) or UP
Download WHATS INVISIBLE 2.8.2 Unlocked APK For Android