How is the «Sign Up for Newsletter» checkbox implemented on the customer registration form («Create New Customer Account»)?

Development Customer

dmitrii_fediuk (Dmitrii Fediuk) March 30, 2016, 9:05pm 2

See also:

How is the customer registration form implemented?
How to show the «Date of Birth» calendar on the frontend «Create New Customer Account» and «Edit Account Information» pages?
How is a CAPTCHA checked for the frontend customer registration form?