Hello LeonidS  

All email notifications are off, but system still send emails in duplicate when someone creates or replies "Conversations" 

Push Messages  from Messenger also go out double, sometimes 8,9,10 copies of the same message. 

My problem is the duplication of messages. 

Where can I look at the code to see what is causing this problem? What manages the sending of messages from modules that are outside of messenger?

Reading on una.io, I am seeing many people saying there is something wrong with the messenger module.