I think you are trying to find the fastest and easiest way to Import/Migrate email from IMAP to Gmail accounts. So I recommended using the most popular and effective third-party tool that’s called eSoftTools IMAP Backup and MIgratoin Software. With the help of this application, you can easily Import/Migrate email from IMAP to Gmail accounts and another IMAP Server. This tool provides multiple features like bulk backup and migration, email filtering, PST splitting, and a lot more options.
Read more:- Import/Migrate email from IMAP to Gmail accounts
Read more:- Import/Migrate email from IMAP to Gmail accounts
