To export your customer data, please follow the below steps -

Step 1. In your MioCommerce dashboard, Go to the “Customers” section of your admin, and click “Export Customers” in the top-right corner of the screen.

Step 2. Select the format you would like to export. You can choose Google .csv format

Step 3. Your export .csv will download automatically. It will look like below. Delete all the columns except the Email Address one (highlighted in blue)

Step 4. Import them into your review platform. Click on "Import your own email addresses and then choose the saved excel file. Done! You have successfully imported your customer email addresses.