What is the safest way to combine multiple PST files into one single PST without data loss?

[AlbertThomas]

The safest way to combine multiple PST files into one PST without losing data is to use DataVare Outlook PST Merge Expert Tool, which combines files while preserving emails, attachments, folder hierarchy and metadata, as well as offering duplicate removal and compatibility with Outlook versions for error-free PST consolidation. For more details, users can evaluate the software free demo edition.