tmux has its control mode, activated with -CC, to allow the terminal emulator to control tmux. iTerm2 uses this to great effect for allowing tmux windows to appear as separate iTerm windows.
Are there other terminal emulators that support control mode? I am particularly interested in terminal emulators / SSH clients for Windows that might offer such functionality, but Linux/Unix ones are interesting as well.
tmux -CCin my SSH session from iterm2 and it works.