What is Auto Archive?
In Arc, we Auto Archive idle Unpinned Tabs at the cadence of your choice. This gives you a fresh start and keeps your sidebar tidy.
View & Restore Archived Tabs
View Archived Tabs
To view the Archive, hit Command-T and type "View Archive."
Restore Archived Tabs
You can restore tabs by heading to the Archive (Command-T / View Archive) and hitting the un-archive icon next to any tab.
Adjust the Auto Archive Timing
By default, idle Unpinned Tabs archive every 12 hours. Viewing or clicking on a tab will always reset the timer!
You can adjust the timing in Settings > General in the Mac menu bar and selecting "Archive tabs after":
Clear the Archive
To remove all archived tabs at once, just right-click the Archive Tabs box in the Library and select "Clear Archive."