SysTools PST Merge - PST Merge Tool precisely join or merge multiple PST files in Outlook 2019, 2016, 2013, 2010
Outlook Repair Toolbox - Information and data restoration from corrupted Microsoft Outlook *.PST and *.OST files all versions (ANSI and Unicode). The MS Outlook PST repair tool also enables you to convert *.OST files to *.PST format.
ReliefJet Essentials for Outlook - A large set of useful and easy-to-use tools for every Microsoft Outlook user: Import, export and convert using EML,MSG,TXT and PST formats; remove duplicate items, process attachments and extract addresses; get reports and statistics and even more...
INTRIGUA Recover PST - Rebuild Corrupt PST file and Recover deleted outlook emails.
Aryson Merge PST - Aryson Merge PST Tool allows to easily merge or combine more than two or multiple PST files into simple one PST file including all email items. It is one of the best software to merge PST files successfully.
SysInfo Advance Outlook Recovery - SysInfo Advance Outlook Recovery is used to repair multiple PST files in a single go.