Definition: An inactive subscriber is a contact who has not engaged with email campaigns for a defined period of time, such as not opening or clicking emails for 30, 60, or 90 days. Tracking inactive subscribers helps businesses maintain healthy email lists, improve deliverability, and design reactivation or winback campaigns.
Analogy: An inactive subscriber is like someone who still receives your invitations but hasn’t responded in a long time. They may still be interested, but they need a different approach to re-engage.
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