You can Merge PST files by using this PST Merge Tool. This software is easy to use and download, PST Merge tool support to both file types ANSI and UNICODE. This software can remove a duplicate PST file format while merging the batch PST file. The PST Merge tool has many advanced featured like no file size limitation and merge Archive and highly damaged PST file.
Visit here for more info: https://www.osttopstapp.com/pst-merge.html
Easily merge the Outlook PST files with the help of a new Outlook PST merge tool. With this tool, a user can merge various Outlook PST files in a single click. The tool maintains the integrity of the original PST files and there is no data alteration or data loss with the PST files. There is no file size limitation and a user can merge PST files of any size.
For more info: - http://www.howtomergepstfiles.com/
To merge multiple PST files you can find many tools. You can try Merge PST Tool this is one of the best & suitable software. This software merges multiple Outlook's PST files in a quick time. It works with all the versions of Windows OS and MS Outlook and users can add ANSI as well as UNICODE. PST file type to merge. The trial version can merge few items from each folder. Visit here for more data:-http://www.sametools.com/merge/pst/