How to Optimize Outlook Performance | Four Top Methods

Ashwani Tiwari | Modified: September 20th, 2021 | MS Outlook

This article contains instructions on how to optimize Outlook performance In this post, we’ll go through how to improve the performance of your Microsoft Outlook application if you are having any performance problems with it.

Note: If you use the suggestions in this post, make sure you follow all of the procedures carefully to safeguard your computer and your data.

Before getting towards the methods to optimize the Outlook performance let find the what are the performance issue Outlook users encounter while using it.

What Types of Performance Issues Do Users Have in Outlook?

  • Many Outlook users reported that after a few minutes of use, Outlook appears to be unresponsive.
  • Also, some of the Outlook users reported that after using a long period, Microsoft Outlook would freeze and cease not responding issue.
  • Corruption of Outlook PST file due to oversized Outlook mailbox.

Outlook Performance Issues | Causes

  • Due to the lack of the most recent service pack and update users encounter performance issues.
  • If your PST file is oversized then you will notice this performance and lagging issue in Outlook.
  • Sometimes Outlook add-ins are also responsible for the performance degradation.
  • Some of the Anti-virus software is also degrading your Outlook performance.

How to Optimize Outlook Performance

Here in this section, we are going to discuss some of the best performance increments techniques.

# Tip 1: Update the Service Pack and Outlook Version

You may experience lagging and freezing problems in Outlook if you are running the outdated service pack. To resolve this issue, we suggest that you download and install the most recent application service pack or Outlook software updates. If you wish to upgrade Outlook, follow the procedures outlined below.

For Outlook 2013, 2016, and 2019.

1. To begin, launch Outlook.

2. Go to the File menu now.

3. Choose account or office account from the file menu.

4. Select update options from the product information menu, then click update now.

For Outlook 2010

1. To begin, go to your computer and launch the Outlook 2010 program.

2. Select Help from the File menu.

3. Now, under the help menu, select Check for Update.

#Tip 2: Reduce the Outlook Mailbox Size

Outlook saves data in the PST file formats, as we all know. We also know that the maximum size of a PST file in Outlook 2010 and subsequent versions are 15 GB, while the default maximum size for a Unicode PST file is roughly 25 GB.

Furthermore, many of us believe that this is sufficient space for an email client, but I believe you are mistaken. The Outlook program is prone to mailbox data duplication, and duplicate items such as duplicate emails, calendar entries, contacts, tasks, and journals are among the most common causes of mailbox data space consumption.

Now, to remove duplicate data from Outlook there is no manual method available that fully deletes all your duplicate items from Outlook.

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So to make your task easy here in this section we are going to discuss the best-automated tool that can easily remove duplicate items from Outlook. Outlook Duplicate Remover Tool. This tool easily moves out duplicate items such as emails, contacts, calendar items, and other Outlook items.

#Tip 3: Extract Unnecessary Outlook Attachment

Outlook attachment is also the reason for Outlook’s oversized mailbox. And to extract your all attachment from Outlook is quite a time-consuming task because it is one o one task.

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Now, to make the task faster and easy you can try the Outlook Attachment Extractor utility to extract all attachments from Outlook PST file such as from emails, contacts, and calendar items. Also, the tool offers you the option to extract attachments from Outlook PST, OST, BAK, and, MSG files.

#Tip 4: Fix the Corruption of Outlook

Sometimes Outlook corruption is also is the reason for performance degradation such as not responding, unable to open PST file, stuck on the blue screen, Now, to fix the corruption in Outlook you can try the Outlook inbox repair tool i.e, Scanpst.

This tool easily repairs minor corruption of Outlook PST and helps to optimize Outlook performance due to Outlook PST corruption.

Well, the procedure described above is a good way to deal with corruption in the Outlook.pst file. However, as previously stated, theScanpst.exe is only capable of fixing minor PST corruption; if the PST corruption is significant, it will not be repaired.

As a result, here in this section, we are going to introduce one of the most amazing tools PST Repair Tool for repairing any sort of corruption in Outlook PST.

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It’s one of the most popular Outlook recovery programs since it comes with a slew of advanced capabilities that may help you fix damaged PST files.


Well, an optimized application always increases your workflow. Therefore here in this write-up, we have discussed some of the method manual and automated methods to optimize Outlook performance. So go through the write and increase your Outlook performance.