Tell people what to expect
Create a signup form that explains the kind of email you send. Make the invitation specific and easy to understand. Double opt-in asks the subscriber to confirm before joining the active audience.
Keep the choice separate
A customer order is not permission for marketing. The optional WooCommerce checkout invitation should remain an explicit choice. Newsletter permission, tracking choices and unrelated sales messages should not be bundled together.
Honor a change of mind
Keep the unsubscribe link visible. Unsubscribed and suppressed contacts must stay excluded from future campaign audiences. Do not reimport a list to bypass those preferences.
Check your local obligations
Set an accurate privacy notice and appropriate retention practices for your business. The plugin provides controls; your use, consent wording and lawful basis remain your responsibility.