Updated on May 31st, 2021
The outlook data file, commonly known as PST or personal storage table, has a size limitation problem that can cause severe problems, i.e. from slow Outlook performance to corruption. An oversized PST file is always prone to corruption. It becomes mandatory for the user to delete all duplicate emails in Outlook.
Also, it can slow down your Outlook client, and cause other performance and functioning issues. Having duplicate emails in Outlook is the key reason for increasing PST file size. Duplicate emails and other mailbox content need more space in the file, and it results in increasing PST file size. Whenever an Outlook data file reaches its maximum size limit, i.e. 2 GB for ANSI PST and 20-50 GB for Unicode PST, the Outlook client starts working abnormally. This will cause tremendous performance degradation and other issues. The situation becomes much worse than before when the PST file size goes beyond its limit. This can cause corruption in your mailbox, and you can lose all your emails and other mailbox content.
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Now the question is how to overcome this situation. If you’re having duplicate items in your Outlook PST files, you must remove them in order to make your PST files handy and immune to corruption. In this post, I’ll show you an easy manual trick to remove Outlook emails duplicates from PST files. Before start Outlook duplicate removal, you should know what Outlook duplicate items are and why they occur in your Outlook mailbox.
In MS Outlook email client, duplicate items can be anything like email message, contact, calendar, entry, task, note as well as the attachment. A duplicate item needs exactly the same size what the original mailbox item does, i.e. if the size of an email message is 100 KB, this means the duplicate email message has also the same size. Do you know why duplicate items occur in Outlook mailbox? Have you ever tried to find out the reason behind this? There’re numerous reasons which can cause duplicate items in Outlook, such as:
Due to all these reasons (told above), duplicate items occur in Outlook mailbox and cause oversized PST files. Now the question is how to remove MS Outlook duplicates from the PST mailbox. Generally, there’re two ways to do this: an easy manual trick and a professional solution. First, we’ll talk about the manual trick that doesn’t require any third-party tool.
The manual trick to delete multiple duplicate copies of items in Outlook is so easy and safe to perform. Just follow the steps given below to know how to remove Outlook duplicates:
Note: Click Manage Views... check the view mode which you're currently on, i.e. either folder view or table view.
Note: Use the following combinations of views and fields:
Calendar with appointments; contacts with phone list; inbox with messages; journal with entry list; and notes with notes list.
Another way to erase Outlook duplicates is a professional solution, known as Outlook Duplicate Remover Tool. The software smart design provides excellent results in a very quick time. The manual trick can take you enough time, but a professional tool is swift and quick in action. It can safely remove multiple copies of emails in Outlook in order to make the Outlook data files handy and immune to corruption. The software exclusively supports PST files of any size or any format, i.e. ANSI and Unicode. Before using this software, make sure the PST files are neither corrupt nor password-protect from which you want to remove Microsoft Outlook duplicates.
Outlook Duplicate Remover software is available with the free demo version. I personally recommend users to evaluate the software before purchasing the licensed version. Generally, the demo version of a commercial ware tool works exactly the same as the licensed version does. The demo version of this software allows users to remove duplicate items from the first 25 email items of each mailbox folder of each selected PST file.
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