GainTools OST to PST Converter is an expert software that converts OST files to PST format in a quick and safe way. It also enables users to access OST mailbox data offline by exporting emails, attachments, contacts, calendars, and other mailbox items to Outlook PST files. It maintains the original folder hierarchy and data integrity. It offers an easy to use and clean interface that no tech skills are needed to use. Additionally, the converter tool works efficiently and smoothly in all versions of Windows OS.