About 22.5% of a business contact database goes out of date each year. Why decay happens, what it costs marketing, and why buying replacements is the wrong fix.
A marketing database looks like an asset on the day it is built. Then people change jobs, get promoted, move companies, change email addresses and retire. Roughly 22.5% of a business contact database goes out of date every year. Within three years, most of a list bought today will no longer reach the person it names.
Decay rarely announces itself. Campaigns simply perform a little worse each quarter. Bounce rates creep up, reply rates drift down, and sales teams stop trusting the data marketing hands them.
Most companies replace decayed contacts by buying new ones from a data provider. Bought contacts are cold: the people on them have no relationship with the company. They decay at the same rate as everything else, so the purchase has to be repeated every year. And under European data protection law, bought personal data brings its own questions about legal basis.
Meanwhile, the freshest and warmest contact data a company holds is sitting in its employees' mailboxes and calendars. Every meeting invitation, every email thread with a customer, partner or prospect is a current, real relationship. When a contact changes jobs, their new address shows up in someone's inbox long before any data provider updates its records.
Almost none of it reaches the marketing database, because employees are never rewarded for typing contacts into the CRM, so they do not.
RelationLens finds the business contacts already in employees' Microsoft 365 and Google Workspace mailboxes every night, shows each one privately to the employee whose mailbox it came from, and sends Marketing only the contacts that employee approves. The database grows from relationships the company already has, and keeps refreshing as those relationships move.