The latest Volusion release notes includes important information about a recent change to how Email Subscribers are handled by default.

Newsletter Subscription Updates

To ensure that all Volusion merchant stores comply with strict email spamming laws outside the US, the checkout page newsletter subscription checkbox is unselected by default for all non-US shoppers.

The Volusion storefront detects the language of the shopper’s browser and leaves the newsletter subscription box unselected for all shoppers not using “eng-US” language.