good. could have been better if it was just like opera gx messenger style. like a popup/panel

I don't think there is a simple way to re-open the Messenger sidebar once closed other than going to extensions menu and disabling it and re-enabling it? It would be great if it placed an icon next to the search/address bar like how Adblock Plus does for example. If that could be done, then I could see it being a 5-star extension. Please reply if anyone can if I am missing something, please. Thank you.

Pretty slick.

Just Missing the Hide/Unhide functionality. Keep up the good work!

It's very nice to have have facebook messenger in the sidebar.