To encourage as many site visitors as possible to share their email, it is recommended to use a single sign-on (SSO) tool like Google or Facebook Connect, which can increase the email sharing rate by 20%-40%.

• Prioritize more discounts through email, which increases the lifetime value (LTV).
• Adjust the landing page strategy and always place the email-sharing at the checkout page only.
• Include an email collection pop-up feature to improve chances of email collection.
• Use a single sign-on (SSO) tool like Google or Facebook Connect, which can increase the email sharing rate by 20%-40%.

The correct answer is: Use a single sign-on (SSO) tool like Google or Facebook Connect, which can increase the email sharing rate by 20%-40%.

Explanation: Using a single sign-on (SSO) tool such as Google or Facebook Connect can significantly increase the email sharing rate by simplifying the process for users. This method enhances user convenience, encouraging more visitors to share their email addresses. SSO tools streamline the sign-up process, reducing friction and boosting the likelihood of email collection.

Reference article: Invest in First-Party Data for a Durable Foundation