First, Eliza wants to make sure her audience is up to date. What might she do to accomplish this?

To ensure her audience is up to date, Eliza can ask for a reconfirmation of subscription. This process, often called a re-engagement campaign, prompts subscribers to confirm they still want to receive emails, helping to remove disengaged or invalid addresses. She can also send an updated profile link campaign, allowing subscribers to directly update their preferences and personal information. Automatically unsubscribing inactive contacts is a good practice for list hygiene but doesn't actively update existing subscriber data; it removes outdated contacts. Including different lists on various marketing platforms is a strategy for audience segmentation and reach, not for updating existing subscriber information within a single platform.