The usual failure
Nobody wants to delete names. The list looks large. The inbox starts saying no. Then more tools are bought to 'fix reach'.
What to make true
A respectful last sequence. Then suppression. Deliverability is a system, not a hope that inactive people will come back if you shout.
Worked example
Keep it this plain. A team uses sunset flow as if buying the software installed the meaning. It did not. Nobody wants to delete names. The list looks large. The inbox starts saying no. Then more tools are bought to 'fix reach'. The move is not a new integration. A respectful last sequence. Then suppression. Deliverability is a system, not a hope that inactive people will come back if you shout.