The first step is to download, install and run G Suite Backup Software on your Windows PC.
Before starting the backup process, make sure IMAP should be enabled and less secure apps should be turn on.
Now, provide email address and password of your G Suite account and hit Connect to my Gmail account.
Choose all mails or selected folder of G Suite account whose backup you want to store. After that, choose a file format (EML, EMLX, MSG, MBOX or PST) in which you want to save G Suite emails.
Now, it’s time to mention a destination path to save backup data. For this, use the Browse button. In the end, place the mouse cursor to Process Now option to commence the backup task.