Combining contact folders in Outlook can be efficiently accomplished using the Shoviv PST Merge Tool. This software allows users to merge multiple PST files, including contact folders, into a single file without losing any metadata. To use the Shoviv tool, follow these steps: 1. Install and open the Shoviv PST Merge Tool. 2. Add the PST files that contain the contacts you wish to merge. 3. Select the "Merge Contacts" option to ensure only contact folders are combined. 4. Choose a target folder for the new merged PST file. 5. Click "Export" to complete the merging process. This method simplifies managing contacts and eliminates duplicates effectively.