How To Export All Customers' Emails
If you need to generate an extract with all customers' emails go to:
Reports -> Customers -overview and click 'Export'
This will prompt a notification with a link to the Download page. Click the download page link.
A new window with all downloads will appear. Click Download button. You will also receive an automated email with your file to download.
Once downloaded you will be able to see all your customers' data including emails: