Want to move your entire Google Workspace data without stress? Try Aryson Google Workspace Backup Tool, which gives you full control to download or back up Gmail messages, calendars, contacts, and files. You can also migrate Google Workspace to IMAP without changing the folder layout or missing any emails. The tool supports output formats like EMLX, MHT, HTML, and others, letting you choose the format that suits your needs. It also has a skip-folder feature to avoid trash or spam and can prevent duplicate data during backup. Furthermore, it supports batch user backup using an admin account for faster processing.

For more: https://www.aryson.in/blog/migrate-google-workspace-to-imap/