A PST file is a personal storage table file that stores all of your Outlook mailbox data, including emails, contacts, and calendar events. If you have many PST files, you may want to merge them into one to make maintenance easier. The SameTools Merge PST Software is the best and most secure way to combine multiple Outlook PST files at once. With this user-friendly software, users can swiftly combine two or more Outlook PST files into a single Outlook PST without losing any data, including contacts, calendars, events, tasks, attachments, and all others. It also makes it simple to combine ANSI, Unicode, archived, and password-protected Outlook PST files. It was completely compatible with all versions of Microsoft Outlook and Windows OS. The software can combine multiple PST files into a single PST without altering the original PST. Outlook PST merge file software works with all versions of Microsoft Outlook, including 2010, 2012, 2013, 2016, and 2019. Users can store individual PST files on the desktop at a convenient location. The demo version is completely free to use