WordPress Users & WooCommerce Customers Import Export plugin facilitates the import and export of users effortlessly. However, it also provides an option to export specific columns individually also. User Email is one among the column which appears for mapping. In order to export the user emails only, just select the user_email column from the mapping section and unselect all other columns.
The steps involved in exporting user emails are furnished below:
To get a detailed overview of how the users are exported, go to Setting up WordPress Users and WooCommerce Customers Import-Export Plugin