Which of the following segments would be considered the most highly engaged audience?

n email marketing, "engagement" is measured by how recently a subscriber has interacted with your content. The shorter the timeframe of that interaction, the more highly engaged the audience is considered to be. Peak Interest: A customer who interacted within the last 30 days has your brand "top of mind." Their interest is fresh, making them significantly more likely to open your next email compared to someone who hasn't clicked in three months. Deliverability Shield: This segment is often used by marketers as a "safe" group. Sending to your 30-day engaged audience generates high open rates (often 40% or higher), which sends a strong positive signal to inbox providers like Gmail. This protects your sender reputation. Recency Bias: As the window expands to 60 or 90 days, the risk of "inbox fatigue" or the subscriber having moved on increases. While 60-day and 90-day segments are still "engaged," they are considered broader, lower-intent audiences compared to the 30-day group.