Questions about notification and others

I test free version of rocket chat installed on Ubuntu 18.04 via snap.

  1. In private channel and public channel dont work notification and popup in desktop application and mobile app.
    Notification about private message are work.
    Settings of each private& public channel of notification are enabled.
  2. How i can settings up notification to rocket chat app a incoming email of some mail provider? Can i use webhook? The mailbox that must check is users mailbox. I use mail provader
  3. How i can view , find and analyze all users message private and public chats? I need piwik integration or other?