Since you're using iTerm, here's a fancy little trick:
If you're connected to a remote machine, run 'tmux -CC'. Tmux tabs on the remote machine will appear as iTerm tabs on your local machine. (This works for attaching to existing tmux sessions as well: 'tmux -CC attach'.)
I don't believe it's actually a feature of tmux itself, but rather iTerm. My suspicion is that iTerm watches for that command in particular and rewrites it behind the scenes.
I was told about it by a coworker - more detailed info can be found here:
If you're connected to a remote machine, run 'tmux -CC'. Tmux tabs on the remote machine will appear as iTerm tabs on your local machine. (This works for attaching to existing tmux sessions as well: 'tmux -CC attach'.)