Contact Data Decay Sweep (Retention)

Contact Data Decay Sweep (Retention)

1. 01

   Pull a random 200-record sample from every active client list and run it through a verification pass

   Bounce rates above 3% on a cold list usually mean the source data aged out. Flag any list where the sample fails at twice the client's baseline.

2. 02

   Segment the sample by source: platform-native records versus records appended by enrichment steps

   Enrichment layers such as those in Bardeen or Leadinfo can mask decay by overwriting stale fields with inferred values. Track which layer supplied each field so you know what to re-verify.

3. 03

   Re-verify job titles and company domains for any contact older than 90 days

   B2B job-change rates run roughly 2% to 3% per month, so a quarter-old title field is wrong for about one in twelve contacts. Domain changes are rarer but break deliverability outright.

4. 04

   Score each list on three axes: deliverability, title accuracy, and firmographic match to the original targeting hypothesis

   A list can be deliverable and still useless if the companies no longer match the buyer profile the client signed off on. Score all three or you will report green on a dead list.

5. 05

   Quarantine lists scoring below threshold and notify the account lead before the next send

   Sending on a decayed list burns the client's domain reputation, which takes 4 to 8 weeks of warmed volume to recover. Quarantine is cheaper than an apology.

6. 06

   Rebuild quarantined segments from fresh sources and document the delta in the monthly retainer report

   Show the client what percentage of the original list survived. This turns a maintenance task into evidence that the retainer covers data stewardship, not just list pulls.

7. 07

   Log the decay rate per source so future targeting decisions weight sources by observed shelf life

   Sources that decay in 60 days should not anchor a 12-month ABM program. Keep a running table and review it at each quarterly planning session.