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...
SysTools PST Merge - PST Merge Tool precisely join or merge multiple PST files in Outlook 2019, 2016, 2013, 2010
Kernel for Attachment Management - Kernel for Attachment Management software reduces the size of PST file by extracting attachments from emails.
Save Attachments from Outlook - Saves attachments from messages, contacts, appointments, meetings, tasks, notes, journal entries and other Outlook items to the specified folder by file mask. It is possible to retain the original folder structure.
Regain Outlook PST Merger - Merge Multiple Outlook PST Files into Single PST file
Twinbox - TechHit.com - timesaving utilities and add-ins for Microsoft Outlook.