Kontalk is a mesanging network instant application, simple to use and very lightweight application in android, it's one of the open source application that is still active, I have used Kontalk application did not find sig in feature with email and broadcast on Kontalk application
as a Kontalk app user I would like to suggest to the developer to be able to add sign in features with email and broadcast in the Kontalk app.
this is the look in the Kontalk app after adding the feature I proposed earlier.
feature sign in with email
before
after
feature broadcast
feature advantage I propose for Kontalk developer for sign in feature with email to make security of Kontalk application even better and directly connected with android user of Kontalk app and this is very perfect feature for Kontalk app for broadcast feature application user can send message to many phone number at the same time and can also send a message by marking a phone number that can be ditentuka by app users by marking the phone number from the contact.