You can simply read the blog if you want to merge Outlook archive files with PST format. By reading this informative article you can see the steps which help you to complete the task of combining the Outlook multiple files into one. However, the manual steps are cumbersome to perform for novice users who do not have technical expertise. Therefore, as the easiest solution, you can simply go with the SysInfo PST Merge Tool which is mentioned in the given blog. Try the professional tool to merge Outlook files without facing any hassle.