MailsDaddy EML to Office 365 Migration Tool is very helpful to import the EML file into Exchange Online. This application will store all the EML files with all attachments and preview the items after that you can easily upload the EML file data into Office 365 Cloud Platform Environment in few clicks. There are no size limits of migration. The software keeps the original folder structure while migrating EML to the O365 account.
More Info- https://www.mailsdaddy.com/eml-to-office-365-migration-tool/