Zynga was catalogued by the UXP2 Lab over the unsubscribe option in its emails. According to the entry, the “Unsubscribe here” link is hidden as white text on a white background, making it effectively invisible.
‹ All examples Zynga
Zynga.com: Unsubscribe hidden as white on white.
“The “Unsubscribe here” link is hidden as white text on a white background.”
Disclaimer: examples in the Hall of Shame are generally drawn from public submissions and cited sources; they have not been independently verified and may contain inaccuracies. They are presented as illustrations of design patterns, not findings of fact, unlawful conduct, or intent.