Developer reply by fabianswebworld
Rated 3 out of 5 stars
Been waiting for this one since forever!
Update: Seems unable to flip from a gmail tab.
Thanks for your review! And regarding the Flipping from a Gmail tab: Via mouse-click on the active tab, tab flipping should work well - the Keyboard shortcut doesn't work since Gmail itself occupies control over the Ctrl key and some different shortcuts. You might want to try disabling the keyboard shortcuts in the Gmail settings. For me, it works perfectly both by mouse and by keyboard then.
To create your own collections, you must have a Mozilla Add-ons account.