SysTools PST Merge - PST Merge Tool precisely join or merge multiple PST files in Outlook 2019, 2016, 2013, 2010
Convert Outlook MSG to PST - Converts messages and other Outlook items from files in MSG format to PST data files.
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...
Regain Outlook PST Merger - Merge Multiple Outlook PST Files into Single PST file
EML to PST Converter - EML to PST Converter is an ultimate email conversion and migration tool.
Merge Folders for Outlook - Merges selected Outlook folders into destination folder.