On account of the difficulty imputed by the innumerous PST files in your Outlook mailbox, do you wish to merge multiple PST files into single file? Use SysTools PST Merge Software to merge multiple Outlook PST files to single PST. Manage single PST file is one of easy process compare to multiple Outlook PST files, so don't waste your valuable time merge entirely Outlook data to single PST for better Outlook performance. It is an easy-to-use tool, which has a user-friendly interface that helps you to implement the process to merge Outlook files with great ease. Newest version 2.4 of PST Merge software merges too many Outlook PST files to single PST without any recurrence. Merge multiple PST files software supports Win98, Win 2000, Win 2003, Win XP, Vista, and Win7. Further more information you can download DEMO version at free of cost. But this demo version is able to merge only 5 items of selected Outlook folders. If you are satisfied with demo version and want to merge multiple Outlook PST files at a time, purchase FULL version. You can buy personals license only $69 and business license only $199 with full technical support.