Unlike .zip files, which most operating systems can open natively, .7z files usually require a third-party tool.
It can handle astronomical amounts of data—up to 16 billion gigabytes (exbibytes) theoretically. one.7z
You can split one giant archive into smaller chunks (like archive.7z.001 , archive.7z.002 ), which is perfect for emailing large folders that exceed attachment limits. How to Open and Create .7z Files Unlike