MailsDaddy PST Merge and Join tool is a single wizard application that combines 2 or more PSTs into a single Outlook PST file. It has two different options for providing the resulting PST file. If you want to merge the same folder data like inbox, outbox, draft etc. then select the Merge PST button. It separately arranges the same structure in the new PST file. Another button is to join PST, which allows you to include multiple PST files in a single PST that is also compatible across all Outlook versions. It is quite easy to find and add data with the tool that there is no limit to adding data. PST Merge and Join program has been already tested on an Outlook data file up to 50 GB. The best part of the tool is that it works uniformly on all PSTs i.e. ANSI and Unicode PST. Before merging and joining the data, you can add or remove PST file from the list. Along the compatibility with Outlook, it also supports all Windows OS like - Win 10, 8.1,8, 7, XP etc. If you want to use demo edition first then it merges or joins first 20 items from each mailbox.