If you have a lot of WhatsApp contacts, the chat screen can quickly become cluttered. Archiving conversations is an easy way to organize this list, with archived chats disappearing until you need them again. In a server-side test, WhatsApp is testing some improvements to make the feature even more useful.
At the moment, archived conversations can be accessed by scrolling to the very bottom of the chat screen. If a new message is received, the chat in question will be removed from the archive list and sent back to the top.Read More
New WhatsApp feature permanently hides those annoying chats you're trying to avoid was written by the awesome team at Android Police.