How to Amalgamate PST files Safely

Written By phillcalls
Updated on November 15th, 2022

So far we have read about what happens if your Outlook PST file minimum size limit is exceeded and the measures to prevent PST corruption. If the corruption has already taken place, you can recover from it using PST Repair Tool by Microsoft. There is a concern that many people have shared with me. They say that it is not possible for them to manage multiple PST files and amalgamate PST files in order to prevent corruption of PST files because of its size limit. A nice question asked by a curious 1st-year college student was:

Q: Is there any way that we can Amalgamate PST files?

First I recommend you verify which version of Outlook PST is there in your computer. All information about PST is mentioned on Wikipedia.

So here I am with a solution for how you can amalgamate PST files to save disk space and keep Outlook working without any bugs. Previously I had shared a solution to combine or merge multiple PST files into a single PST and it was really effective. You can create space or compress your Outlook PST file in multiple ways, i.e. manually or with a third-party effective tool. I am sharing a manual technique that can be effective to an extent, but if your Outlook PST is very large, then I recommend PST Compress and Compact tool which gives multiple options at the time of compression and safely compresses your Outlook PST.

You can compress the PST file by managing the mailbox items, using the Mailbox Cleanup tool which comes with MS Outlook.

How to manage Outlook Mailbox (Outlook 2007)

- In your Ms. Outlook Go to Tools ⇒ Click on Mailbox Cleanup
  Click to Enlarge the Image

- Click on the “View Mailbox files” tab in the popup. This will show the usage of different sections of your mailbox.

- If you click on Auto Archive, your old emails will be automatically moved from your PST to an archive file in your computer

Check the size of your deleted mail items by clicking on “View Deleted Item Size” and delete them using the “Empty” tab.

How to compress or Compact Oversized PST files safely

Open MS Outlook
Go to View ⇒ Arrange by ⇒ Click on Size. This will sort all the images in the largest to smallest file order.
Delete unwanted emails (Especially the ones with large file attachments)
Make sure you permanently delete all emails from the “Deleted Items” section as well.
Click on “Tools” in the menu bar and go to “Account Settings”
Click on “Data” and select your Personal folder file (PST file)
Double Click on the selected PST file or click on Settings
Click on the “Compact Now” tab to compress your Outlook PST file.

Your PST files will be now compressed and with a reduced size. Though these manual techniques work well in small scenarios, when it comes to large and important file transfers daily, you cannot afford to delete a single file. In such cases, third-party tools are the best options to go with. Above in this post, I have mentioned the tool that i recommend using, but you can make your decision at your convenience. Question and Comment