The first thing we look at on most audits isn’t the campaigns. It’s the list.
Lists accumulate. Old contacts, soft bounces that never got cleaned, role addresses, typos, exports from a previous platform, free downloads from three years ago. None of this is malicious. It’s just what happens when you’ve been sending email for a while and never had a reason to clean.
The cost shows up in two places. The first is deliverability: the more inactive contacts you keep mailing, the more inbox providers treat your sends as low-engagement. That hurts the people who actually want to hear from you. The second is decision-making. Open rates and click rates calculated on a bloated list tell you almost nothing useful.
A short checklist for businesses that haven’t audited their list in a while:
- Inactivity windows. Anyone who hasn’t opened or clicked in 12 months is a candidate for a re-engagement flow, then suppression.
- Hard bounces. These should be removed automatically by your platform. Worth confirming they actually are.
- Role addresses. info@, admin@, contact@. These rarely engage, and they sit on your list polluting your numbers.
- Source segments. Knowing how a contact got onto your list matters. Mailchimp’s “all subscribers” view obscures the difference between a high-intent signup and a free-PDF download.
Cleaning a list feels counter-intuitive. You spent years building it. But the metric you want isn’t list size. It’s the size of the engaged portion. That’s the part that buys things.