If you have several old backup PST files stored on your computer, the most reliable method to combine them is by using a professional PST merger tool. Manual merging through Outlook is slow and often causes issues, especially if the files are large or old.
A tool like Advik PST Merge Tool helps you combine backup PST files easily—even if they were created in different Outlook versions. You just add all backup PSTs, choose whether you want to merge everything into one file or join them as separate folders, and the tool handles the rest. It also removes duplicates, keeps folder structure safe, and ensures that no data is lost during merging. This makes it the safest solution for organizing several years’ worth of old PST backups into a single, clean file.
A tool like Advik PST Merge Tool helps you combine backup PST files easily—even if they were created in different Outlook versions. You just add all backup PSTs, choose whether you want to merge everything into one file or join them as separate folders, and the tool handles the rest. It also removes duplicates, keeps folder structure safe, and ensures that no data is lost during merging. This makes it the safest solution for organizing several years’ worth of old PST backups into a single, clean file.