Historical Data Drift Estimator
Estimate how much of your database has decayed and gone stale.
%
B2B data decays ~20–30%/year.mo
Estimated stale records
15,887
32% of the database
Still-clean records
34,113
Likely deliverable
Likely hard bounces
6,355
Reputation risk
About 15,887 records (32%) have likely drifted since your last cleanse. Mailing them risks bounces and spam traps that hurt deliverability for everyone. Suppress and re-verify before the next send.
Decay compounds over time, not linearly — job changes, domain moves and role turnover accelerate the longer a list sits unverified.
About this calculator
Apply B2B data-decay rates to your contact count and time since last cleanse to estimate stale records, bounce risk and the threat to your sending reputation.
Everything runs in your browser — nothing you type is sent anywhere or stored. Use it to sanity-check a plan, pressure-test a channel, or brief a team before you commit budget.