This article explains how to compress files and folders into ZIP files on Windows and macOS systems. It includes information about emailing ZIP files.
How to Create a ZIP File in Windows
There are several ways to create a ZIP file. Here is a simple approach to create a ZIP file in Windows.
Right-click an empty space on your desktop and choose New > Compressed (zipped) Folder.
Give the ZIP file a name. The recipient will see this file name when he receives the ZIP file as an attachment.