We have many tools available, but eSoftTools EML to PST Converter 

 software is a great option for opening an EML file in Outlook. The software 

 allows all types of conversion and migration of a large number of files and

 folders without any restrictions. Additionally, the tool is capable of creating 

  and opening individual or group files as well. This software is very useful for 

  users facing technical problems or unable to open their files. The tool can easily 

 resolve these problems and open multiple original files. It also provides 24/7 technical support

  Know more -Open EML files in Outlook