crm-dedupe-howto

List validation integrations with ESPs and CRMs

CRM Duplicate Contact Merge Rules That Actually Win in 2026

Stop losing deals to duplicate contacts. Learn the real merge rules that ensure your CRM master records win—every time.

Deliverability, blocklists and sender reputation for marketers

Gmail Dot and Plus Alias Duplicates in Email Lists 2026

Stop counting Gmail aliases as unique subscribers. Learn how to normalize and dedupe email addresses in marketing lists to reduce bounces and improve.