Aryson PST Split Tool is a dedicated third-party utility designed to safely break down oversized Outlook PST files into smaller, more manageable segments. Managing oversized PST files is essential because exceeding Outlook’s default 50 GB threshold degrades performance and significantly increases the risk of data corruption.
The utility works independently of Microsoft Outlook, meaning you can process files even if you do not have the email client installed on your system. Key Splitting Criteria Available
The software provides several flexible parameters to break up your data based on your specific storage or organizational needs:
By Size: Automatically slices a massive file into uniform, predefined parts (e.g., 2 GB, 5 GB, or 10 GB blocks).
By Date / Year: Filters and segments data chronologically, which is ideal for creating clean yearly historical archives.
By Folder: Separates the PST file according to its internal structure, creating separate files for folders like Inbox, Sent Items, or Custom folders.
By Sender: Clusters and separates email data based on specific sender email IDs. Step-by-Step Guide to Using Aryson PST Split
Using the tool involves a straightforward wizard interface that preserves your original metadata, email properties, and folder hierarchies:
How can I split my Outlook PST files by year – Spiceworks Community
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