Merge PST tool is the best solution for merging various PST files into a single PST file, as we all know manual tricks takes a lot of time to merge file. The tool quickly merges several large PST files in a single click. One can merge the PST files on the basis of date, size, and senders email address. Wider compatible, it is compatible with both ANSI and UNICODE PST files and with all versions of Outlook.