If you want to import EML files into Outlook.com, I suggest using eSoftTools EML to PST Converter. This software has a wide range of bulk conversion features. With this software, any file size can be converted without any problems. This software works with all versions of Windows. Additionally, there is a free demo version of this software that allows you to convert 25+ EML files without having to pay.
To import EML files into Outlook.com, try Advik EML Converter tool on your system. The software can directly upload EML files into Outlook.com without any external help. With this utility, you can import multiple EML files to Outlook.com at once without any data loss. Download its free version and import EML files to Outlook.com in a few simple clciks.