Data Management

All posts in the Data Management category.

Data Management Apr 8, 2026 6 min read

70% of the Contact Lists You Paid For Are Worthless — The Complete B2B Data Quality Guide

Purchased contact databases have an average validity rate of just 30–40%. For every 10 emails you send, 7 are going to addresses that don't exist or have long since changed. This guide shows you how to identify, clean, and maintain high-quality B2B contact data.

Data Management Apr 8, 2026 11 min read

你花錢買的客戶名單，70% 是廢的：B2B 資料品質完全指南

購買的聯繫人資料庫有效率平均只有 30-40%。你每發 10 封郵件，7 封的對象根本不存在或已換了聯繫方式。本文教你如何識別、清洗和維護高品質的 B2B 聯繫人資料。

Data Management Apr 8, 2026 11 min read

你花钱买的客户名单，70% 是废的：B2B 数据质量完全指南

购买的联系人数据库有效率平均只有 30-40%。你每发 10 封邮件，7 封的对象根本不存在或已换了联系方式。本文教你如何识别、清洗和维护高质量的 B2B 联系人数据。