Importing contacts into Exchange user mailbox

This is the second part of the original post Exporting Outlook contacts with PowerShell. I will be going through the process of importing these exported contacts directly into Exchange user mailboxes, in this case we will be using Exchange 2013. If you are using an older or newer version of Exchange server, you will need to use the relevant version of the EWS API, also you will need to adjust the dll path that exists in the PowerShell script supplied.


The brief steps to complete are as follows.

Install EWS API 2.1

Assign Role ApplicationImpersonation to Account used to complete this procedure

Modify and Save the ContactImport.ps1 script with your Exchange CAS server, Impersonation Account + Credentials and CSV share

Save the Import-MailboxContacts.ps1 script to the location specified in ContactImport.ps1

Open an Exchange Management Shell  and run ContactImport.ps1 script to import 

Else create session to Exchange CAS with the below and run ContactImport.ps1 changing EXCHANGESERVER to your Exchange CAS


Prerequisites to this procedure include;

EWS API 2.1  – Install –> (Enables enhanced exchange management for third party applications)

CSV Files – If the CSV files have been created per user with the post Exporting Outlook contacts with PowerShell, the below script already includes all possible mapping for contacts properties, if a custom CSV file has been created then these mapping will need to be modified.

Exchange Impersonation Rights (Allows impersonation of users to enable the ability to import the contacts directly into mailboxes without the users credentials or full access rights to mailbox) See below –>

To configure impersonation rights, you will need to complete through either the Exchange Control Panel or Exchange Management Shell.

The steps to configure impersonation rights through ECP:

Access the ECP URL where EXCHANGESERVER is the name of your CAS and login with an administrative account e.g Exchange Domain Admins–> https://EXCHANGESERVER/ecp/

Select permissions –> admin roles –>


Enter a relevant name e.g Impersonation –> Leave scope as Default –> Add Role ApplicationImpersonation –> Add the user in which you will use to complete the import under Member –> Click Save.


Steps to configure impersonation through PowerShell:

Open Exchange Management Shell with an administrative account

Now that impersonation is configured we can look to start the import process. In this specific use case the name of the CSV files are the name of the user account in the new domain, if you have a case where the new mailbox names differ from the CSV generated name, you will either need to change the generated name of the CSV or create a mapping between the CSV name and the new user account name.



Breakdown of the ContactImport script

Get all CSV file names from share and store in $list variable (Change SERVER\SHARE as appropriate)

Loop through each CSV name in Share, If the name matches the UserPrincipalName property of the mailbox then import to users mailbox else display “No Address Found”

The ForEach uses the Import-MailboxContacts script which will be explained later in the post with the relevant parameters for EWS. You will need to change the EXCHANGESERVER name to your Exchange CAS server with the user name used earlier which has the impersonation rights.



Import-MailboxContacts script

At the bottom of this post is the Import-MailboxContacts script, thanks to Steve Goodman and has been configured to be used with the Exporting Outlook contacts with Powershell post.

The script needs to be saved as Import-MailboxContacts.ps1 and is called by the ContactImport script. The ContactMappings array has been modified to work with the export from Outlook and the script has been updated with the corrects paths for use with EWS 2.1.

And thats it, if all is configured correctly, your users should have newly imported contacts in their mailbox.

Hope this helps!

Full Scripts with comments below;


Import-MailboxContacts script




ContactImport Script