Don't rely on it too much. Multiple times I had to manually reopen the files located in the backup folder of Notepad ++. Once an unsaved file was lost. By comparison, Obsidian automatically saves on each edit, but since Obsidian isn't raw and has formatting quirkiness, it absolutely isn't a replacement for N++.

That's pretty much a hard requirement if you use Windows 10 with it's update-reboot madness.

Yeah it's utterly useful. That said it needs some lazier redesign when files are on network shares, cause it will hang

??? EmEditor has this.