Multiple PST files multiple problem but single file no problem! Yes it is the worldwide that if you have too many MS Outlook PST files it will be create problem. You are feeling unable to manage speed of Outlook as well as working performance. Give a chance of SysTools PST Merge Software with have lots of highly technique to synchronize multiple Outlooks PST files into 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. Before deciding to buy any Outlook Mail Merge tool to merge entire PST files into 1 PST first check your requirement only then you will be in a position to decide which software is pertinent for your need. 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.