The DataVare Merge PST Tool is the best and safest tool for joining files, and it works quickly. You can use this device without losing any information. Two kinds of Outlook PST files—ANSI and UNICODE PST files—can be opened by it. It supports all versions of Windows 11, 10, 8, 7, Vista, and XP. This tool lets users quickly and accurately combine Outlook PST files with all of their features, such as emails, contacts, notes, messages, attachments, and calendars. It joins Outlook PST files together without losing any information. You can try it out by downloading the free demos.