How to do not import duplicate emails/contacts/calendars in Outlook?

Do not import duplicate emails/contacts/calendars from PST file

Remove duplicate imported emails/contacts/tasks with Kutools for Outlook

One click to delete all duplicate emails from a mail folder in Outlook

When importing a PST file by the "Import and Export Wizard" in Outlook, you can prevent importing duplicate emails, contacts, or calendars by checking the "Do not import duplicates" option in the Wizard. Please do as follows:

1. Click "File" > "Open & Export" > "Import/Export" (or "File" > "Open" > "Import") to open the "Import and Export Wizard".

2. In the "Import and Export Wizard", select "Import from another program or file" and click the "Next" button.

3. In the "Import a File" dialog box, select "Outlook Data File (.pst)" and click the "Next" button.

4. In the "Import Outlook Data File" dialog box:

• Click the "Browse" button to specify the PST file you want to import;
• Check the "Do not import duplicates" option;
• Click the "Next" button.

5. In the second "Import Outlook Data File" dialog box:

• Specify the folder of the PST file you want to import;
• Choose the destination email account where you want to import the PST file;
• Click the "Finish" button. See screenshot:

So far, the specified PST file has been imported, excluding all duplicate emails, contacts, calendar items, and so on.

Sometimes, you may import emails by copying and pasting directly, or you forget to check the "Do not import duplicates" option within the "Import and Export Wizard". In these situations, you can remove duplicated imported emails, contacts, or tasks with Kutools for Outlook.

1. After importing emails, contacts, or tasks in Outlook, keep selecting the destination folder, and click "Kutools" > "Duplicate Mails", or "Kutools" > "More" > "Duplicate Contacts" / "Duplicate Tasks" as needed. See screenshot:

Note: In my case, I click "Kutools" > "Duplicate Mails".

2. In the popping out "Duplicate Mails" dialog box, please click the "Delete" button directly.

3. A dialog box will come out and tell you how many duplicate items have been removed. Please click the "OK" button to close it.

So far, all duplicate emails have been removed from the selected folder already.

Notes:

• For removing duplicate contacts, please select the contact folder, and click "Kutools" > "More" > "Duplicate Contacts". See screenshot below:

• For removing duplicate tasks, please select the task folder, and click "Kutools" > "More" > "Duplicate Tasks". See screenshot below:

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