Why do toast notification don't work for emails? It works for whatsapp.... (lg g4)

[AC Question]

The white bar message on top that pops up when receiving messages, emails and whatsapp....a bit similar to BB10 toast notification system....

 

[B. Diddy]

Welcome to Android Central! I don't know for sure, but I don't think email apps are designed to give banner/toast notifications, because email apps typically get frequent or multiple messages, which would be somewhat unwieldy for a toast. Messaging apps, usually get one message at a time, so toasts are more manageable.