To export Gmail emails to EML files using Regain Gmail Backup Software, start by installing and launching the tool. Log in with your Gmail credentials to grant access. Select the specific Gmail account and choose the “EML” file format from the export options. Customize the export settings if needed, then initiate the backup process. The software will efficiently convert and save your Gmail emails as EML files on your local drive. This method ensures a secure and organized way to archive or migrate your emails.