HOWTO: Download and Install Mail Extractor Pro for MacOS


  • This software Mail Extractor Pro tool converts Mac Apple Mail, Mozilla Thunderbird & Postbox data and MBOX files to MS Outlook for Windows 2016 / 2013 / 2010 / 2007 / 2003 / Office 365 and Outlook for Mac 2016 / 2015 / 2011 at high speeds with safety and accuracy.
  • ERIS has purchased the enterprise license of Mail Extractor Pro from USL Software.  
  • You can install this software on any computer at Partners HealthCare or affiliated sites.
  • Software only runs on MacOS.
  • There is limited support when using this application.  Please contact the vendor.


Convert Apple Mail to Outlook PST

Convert Apple Mail Database, Apple Mailbox Export (EMLX) to MS Outlook 2011, 2015 & 2016 for Mac and Outlook 2016, 2013, 2010, 2007, 2003 & Office 365 for Windows file format.


Convert MBOX to Outlook PST

Convert MBOX to PST, support all email clients using *.mbox file format and the PST file will be supported by all Microsoft Outlook version (both Mac & Windows).


Thunderbird/Postbox to Outlook PST

Convert Thunderbird / Postbox to Microsoft Outlook PST file format.

System Requirements  

  • Mac OS 10.6 or higher with all recent updates installed.
  • Free hard disk space for proper operation.
  • Administrative permissions are required for installation.

Install Software

  1. Users need to enroll their Mac into Partners Enterprise Apple Support (PEAS)
  2. Launch Self Service from the Applications folder ( Go menu > Applications)
    Self Service
  3. Click the icon labeled Mail Extractor Pro
  4. After the application has been installed, you can launch the Mail Extractor Pro app by going to your Application folder
  5. Once you open the application you can start the migration of the your Apple Mail or Thunderbird EMail 
  6. For step by step instructions to how to Convert Apple Mail to PST Using “Mail Extractor Pro” please visit the vendors website at

Training and Support 

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