To
transfer IMAP emails to Gmail, you can use Google's Data Migration Service by logging into your Google Admin console, navigating to "Data Migration," selecting "Email," and choosing the migration source as IMAP. You'll need to provide the credentials for your IMAP server, select the users whose emails you want to migrate, and customize any additional settings such as date range or folder selection. Once configured, start the migration process, and Gmail will import the emails from the specified IMAP server to the respective Gmail accounts.