Nice product i am on ubuntu 18.04 and i a Real alternative for the classical EWS ++ efficiency with the task manager.
I think this two point have already re up to you but integration of this Two APP can be a real plus for Hiri :
- Integration of Trello for task managing => upgrade an task from Hiri to Trello become an must have.
-Integration of Chat like Slack permit to have an live channel
Regards, And nice works.