Activate the module
You can activate the “Email Newsletter Opt-In” module under Settings -> Module.
Through the eyes of your customers
Once your customer has placed an order, they can choose to sign up for your newsletter with just one click.
Export customer data
You now can export the list of customers who signed up for your newsletter by choosing “Newsletter opt-in” under Statistics > Export . You could simply import their email addresses into the newsletter program of your choice, e.g. Mailchimp or CleverReach.