The average lifetime of a newsletter subscriber varies across industries. Many subscribers stay engaged for 6–12 months. Some leave sooner if they don't find value in the content. Industries with high relevance or frequent updates often retain subscribers longer. You can extend subscriber lifetime by providing valuable, engaging content. Regularly analyzing unsubscribe reasons helps improve retention. Personalized emails and targeted campaigns increase loyalty. Offering exclusive perks or insights encourages subscribers to stay. A strong onboarding process sets expectations and boosts retention. While averages differ, consistent efforts can significantly improve your subscriber lifetime.