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+--- Thread: What is the Best Way to Compact Large PST Files in Outlook 2021? (/showthread.php?tid=41198)
What is the Best Way to Compact Large PST Files in Outlook 2021? - Thomaswilson081 - 10-24-2025
I have been using Outlook 2021 for quite some time, and recently it has started running slower than usual. I checked and found that my PST file size has become quite large, which I think might be the reason for the lag. I have already deleted some unnecessary emails and attachments, but the file size has not reduced much. Can anyone suggest the best and safest way to compact or compress a large PST file in Outlook 2021 without losing any data?
RE: What is the Best Way to Compact Large PST Files in Outlook 2021? - donnaperez - 10-24-2025
Large PST (Personal Storage Table) files in Outlook can slow down your email experience. If you're experiencing latency when opening or sending new emails in Outlook, compacting your PST file is a great solution. Compacting a PST file reduces its size and improves Outlook performance. The DataVare Outlook PST Compact Expert Tool can help. This tool securely compacts large PST files, improving Outlook performance.
Key Features
Safely compacts large PST files
Reduces file size by removing unused space
Compatible with any Outlook version (2021, 2019, 2016, etc.)
User-friendly interface, no technical knowledge required
Blog:- https://www.datavare.com/how/reduce-outlook-pst-files/