The eSoftTools Outlook Recovery Tool is the best method to import a PST file into Outlook 2010. A large PST file can be broken down into multiple smaller files ranging from 1 GB to 25 GB. The program's user interface is straightforward, and Before the conversion outlook recovery, it will show a live preview of emails, contacts, calendars, attachments and notes, etc. It's easy to use for non-technical and technical users. You can convert up to 25 emails per folder in the trial edition.