PST Compress Software from SysInfoTools is a powerful and innovative utility designed to compress PST files of large size in MS Outlook without affecting the integrity of data. Using this software, users can perform compacting or compression of single or multiple Outlook PST archived files created irrespective of MS Outlook version. The PST compacting process does not frees the space fully from the file. It leaves either some or some percentage of the file size, whichever is greater before compacting. Here this professionally used PST Compress and Compact offered by SysInfoTools is a fully featured utility allows the user to compact Outlook PST files easily within few clicks. SysInfoTools provides a simple user interface for this software so that a novice user can run it without requiring any technical knowledge. Outlook being a highly popular email desktop application, that handle a large volume of messages. Outlook also supports a superb calendar and application for scheduling appointments, sending notifications and automated billing. The email items in Outlook are stored as personal storage table(.pst) format. PST files have generally two formats: ANSI file format and Unicode format. PST Compress and Compact software simplifies PST files management for any computer user and gives a perfect solution for compacting multiple PST files. It provides various options to split any PST files like; split by size, by date or by Email ID. This software allows the user to remove extra or unused space occupied by PST file, by removing big attachments and storing them either in a separate folder or in compressed PST folder. Using this tool, anyone can compress PST files without bothering about the data integrity of PST file. This tool supports ANSI and Unicode PST files and works flawlessly for password protected PST files to compress.