Customer data management is crucial for marketing, administration, as well as order management in a business.
For instance, if you are shifting business from offline to online and you have collected all the details of your regular customers, you can simply import the CSV file having a list of customers to Magento 2 store.
Moreover, if you wish to create an excel file that includes the list of customers, you can simply export the file.
The default Magento 2 allows the merchant to import and export customers. It also allows to extract Postback Data in Magento 2
Steps to Import and Export Customers in Magento 2:
First, let us understand how to export customers.
Method to Export Customers in Magento 2:

1. Log in to Magento 2 admin panel
2. Navigate to System > Data Transfer > Export
3. Under Export Settings, select Customers Main File in Entity Type
4. The Export File Format is CSV by default
5. In Entity Attribute, select choose the attribute that you want to exclude from CSV file
6. Click Continue

7. Here is CSV file having customer data.
Import Customers in Magento 2:

Now, let us add customer data in the CSV list and import the file.
1. Log in to Magento 2 admin panel
2. Navigate to System > Data Transfer > Import
3. In Entity Type, select Customer Main File

4. Select the Add/Update Complex Data in Import Behavior
5. Go to Choose File in Select File to Import

6. Click Check Data
That’s it. The customer data is imported. Apart from this Magento 2 also empowers businesses with robust tools providing facilities of importing and exporting orders in Magetno 2.
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