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How to Clean Customer Lists: A Tiered Reactivation Plan for Trade Show Leads, Dormant CRM Contacts, and Ad Seed Audiences
For three common list types—trade show business cards, dormant historical CRM leads, and ad campaign seed audiences—this article explains how to achieve low-cost, high-efficiency customer list cleaning and CRM tag write-back through local E.164 formatting and deduplication, basic communication validation, and cross-platform registration and activity screening.
