@GaryZ Thanks for sharing that request, and welcome to the MS Edge Insiders community!
Great news: as @HotCakeX astutely noted, this is now an official feature! We recently rolled it out to the Canary and Dev channels. Here's our official announcement from our What's New page:
"Save multiple tabs to Collections
We have heard from feedback that you are using Collections to organize your web projects, and that there should be an easier way to save and open all tabs you're working with. That is why we're excited to announce that you can now quickly save all your tabs and reopen them using Collections. To save your tabs to a collection, simply right-click on a tab and select Add all tabs to a new collection. Tabs in your active window will be added to a new collection with the option to rename it. To reopen those tabs, right-click on the collection and select either to open the items in the current window, a new window, or an InPrivate window.
We would love for you to try this feature out and hope you send us feedback! You can send us feedback via the chat icon in the top right of the browser, or by reaching out to us on Twitter at @MSEdgeDev."
Hopefully this helps, and let us know what you think of the feature!
Fawkes (they/them)
Project & Community Manager - Microsoft Edge
