Send an initial announcement, a "48 hours left" reminder, and a "Last Chance" email.

Briefly explain why they need this (e.g., "Real-time protection against ransomware and identity theft").

How to Use Giveaway Emails to Drive Engagement & Growth - Mailchimp

In 2026, cyber threats have evolved into sophisticated, AI-driven attacks that make robust protection more critical than ever. While many users rely on the built-in Microsoft Defender for baseline safety, premium security suites offer advanced layers like dedicated ransomware shields, unlimited VPNs, and identity theft monitoring that free versions often lack.