If anyone looking for the best solution to convert EML to Office 365 then I would like to suggest you try Mails Daddy EML to Office 365 Migration Tool. It supports all EML and EMLX based email clients data such as Window live mail, Thunderbird, Apple Mail, etc. Here users can transfer multiple & large EML files into Exchange Online & Outlook PST format. This amazing tool provides a filter facility, using this user can perform selective data conversion from EML to Office 365.
Know More: https://www.mailsdaddy.com/eml-to-office-365-migration-tool/