I am thinking to run one Kontalk Instance but i have few questions.
I found bulk sms provider alot expensive so is there any workaround for that, phone number make things easier but its expensive. any cheap provider
What type of encryption Kontalk uses?
Can one can talk from one Kontalk server to another? and what about xmpp users?
Once media files are downloaded by the user they are kept in server or get deleted?
and as a feature request add Server picker in front of app rather changing it in setting.