PST Merge

http://www.pstmerge.com
PST Joiner

PST Joiner

Updated at By PST Merge
Easily merge multiple PST files into a single one with PST Merge tool, which supports Outlook 2003 to 2016 versions. Join Outlook emails, calendars, and contacts with one of the best PST joiner software.
Combine PST

Combine PST

Updated at By PST Merge
PST Merge software efficiently combines multiple PST files into one file without any data loss. Perfect for Outlook users who need to consolidate their email information.