Located in Web Settings > Customer Settings > Newsletter Settings
This will then display a checkbox that allows users to sign-up for your newsletter when they checkout on the last step before submitting the order. Email addresses will be added to Features->Subscribers and can be synchronized with 3rd party services such as MailChimp, Constant Contact and so forth.
Please note in accordance with anti-spam regulations, this checkbox cannot be preselected by default. The user must check it off.
Updated about 2 months ago