Prerequisite Checking

Note: With new update you can remove duplicates from PST/OST/BAK without Outlook. But Microsoft Outtlook must be installed while using Outlook Mode option.

Open SysTools Outlook Duplicates Remover. Go to: Start » Programs » SysTools Outlook Duplicates Remover » SysTools Outlook Duplicates Remover

For removing duplicates from the desired PST file, click on "Add File(s )".

Similarly, you can use "Add Folder" option, to choose multiple PST/OST/BAK files.

You can also choose "Search File" option, which help you to search and add multiple PST/OST/BAK files from your system.

You will get the following screen after clicking on the Add File(s) button. Select the PST file and then click on Open to open the selected PST files.

Either select the first radio button to remove duplicates Within Folder(s) independent of other PST files or the second radio button to remove duplicates Across Folder(s).

Now, click on the Find Duplicates in All Folder(s) or Find Duplicates in Selected Folder(s) option to find and remove duplicates from PST/OST/BAK files. Also, you can choose Exclude Deleted Items or Exclude Junks Folder to remove duplicate from it.

If you want to remove duplicate data items from your configured Outlook profile then, Use Outlook Mode it gives you an option to find and remove duplicates from your configured Outlook profile.

Note: Use Outlook Mode only works when Microsoft Outlook installed on your system

Now, click on the Destination option to choose the desired destination location to save the resultant files.

Tick the checkboxes provided in the Select Item Types section for removing duplicate data, from emails, contacts, calendars, journals, tasks, & notes.

Now, click on the Specify Duplicate Criteria option to find and remove duplicates via particular email fields

Here, you can select one or more fields to customized duplicate removal process. Then, click on the Save button

Now, you can opt Apply Filters option which gives you the freedom to add multiple date filter according to your choice.

After choosing the date filter next step is to select the action that you want apply on duplicate items like Delete Permananently, Move to Deleted Folder, Move to Folder, Put flag, and, Mark as expire

Now, you can choose the Split PST File size option to split the large PST into according to your size choice. Click on Next button to start the process of removing duplicates from PST/OST/BAK files.

The next screen will tell you that the duplicates have been removed successfully.

You can then view the Complete Deduplication Status at your selected destination location.