Plan a win-back program that revives lapsed customers and re-engages dormant subscribers while protecting deliverability through disciplined sunsetting.
## CONTEXT Every email list has two decaying populations: lapsed customers who used to buy and stopped, and dormant subscribers who no longer open or click. Both represent recoverable value, but they also threaten sender reputation, because mailbox providers in 2026 weigh engagement heavily and a list with a long…
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