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...
Import Auto-Complete List for Outlook - Imports Outlook autocomplete list cache from NK2 or XML file to the specified Outlook 2010-2019/365 mailbox or data file.
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.
PST Merger - Merge pst files with free software that combines PST files into a single PST file.
Find Duplicate Contacts for Outlook - This free tool finds duplicate Outlook contacts and mark them with a flag or categories.