A telecommunications company wants to re-engage inactive subscribers who haven't opened an email in 90 days. They plan to send a "We miss you" campaign with special offers to win them back, and need to exclude anyone who has unsubscribed or marked messages as spam. Which combination of features should be used to ensure proper subscriber management for this retention effort?
Correct Answer:
B
The correct answer demonstrates proper subscriber retention methodology. Using a Data Extension with filtering on last open date allows precise targeting of inactive subscribers. Applying suppression lists (unsubscribed and complaint lists) ensures deliverability compliance and respects subscriber preferences. A preference center gives subscribers ongoing control, supporting retention best practices. Option A is incomplete—List Detective is no longer a primary tool and manual removal is inefficient. Option C oversimplifies the process; Audience Builder segments help but don't address suppression requirements. Option D introduces data quality risks and compliance violations through manual CSV handling.
