Mobile app for PC.
Download it on android/ios. You get notifications on your phone, including when you get PMs.
iOS:
https://itunes.apple.com/us/app/tapa...307880732?mt=8
Android:
https://play.google.com/store/apps/d...activity&hl=en
I saw a few complaining they werent getting notified of PMs and missed sales opportunities because of it. This is the current best solution to that problem. As soon as I get a PM my phone vibrates. You can also set it up to ping your phone when someone replies to a post I believe, although have not tried that yet.
Cheers,