In Outlook 2021, managing large PST files is critical because oversized PST can lead to slow performance, corruption or even data loss. While Outlook does not have a fixed size restriction for Unicode PST files, it is strongly advised to keep PST files around 10-20 GB for optimal performance. For users who want to efficiently manage and partition large PST files, this is an ideal choice. This application allows you to split PST files by size, date, folder or email criteria while keeping Outlook quick and reliable. It supports all Outlook versions including 2021 and can handle both ANSI and Unicode PST formats without data loss. The software is easy to use & simply install and choose your PST file, then select the splitting option and click Split. The Softaken Split PST Tool also provides a free demo version and letting you try the splitting process on a small number of emails before paying and seeing exactly how your PST will be separated without compromising your original data.