I like that you can use any phone number to login - no need of an @gmail or gmail account! You don't have access if there is too many messages in queue at one time but other than this nothing really bad about unifying my 2 accounts together :) Would love more options when using multiple devices/phones as well such as being able to choose which device will be used first (or last) etc.. If anyone has questions feel free to ask me. We are trying out all different ways we could integrate our work lives into 1 system where everything would sync up from emails & calendar events through text messaging via WhatsApp messenger app!!