It is simple, easy-to use application for communication with colleagues at work or family members when you are away from them.
I like that it has several options of different channels such as email, WhatsApp, Facebook Messenger etc. The interface could be improved by adding more colors so your messages stand out better than they do now. And also make sure all features available have good descriptions! We used this during my staycation vacation last year which was very helpful because we were able to communicate without being near our devices (and therefore missing important calls/messages).