Magento Open Source 2.2.x

Managing Subscribers

As a best practice you should manage your subscription list on a regular basis, and make sure to process any requests to unsubscribe. In some jurisdictions, it is required by law that requests to unsubscribe are processed within a specific period of time.

If you want to use a third-party service to send newsletters, you can export your subscription list as a CSVComma Separated Values: A type of file used to store data values which are separated from each other by commas. or XMLExtensible Markup Language: A markup format derived from SGML that it used to format information for publication and distribution. file.