Carlos 计划使用 5,000 个邮箱联系人来开展联系人定向推广活动。这是否符合领英的最佳实践？

The correct answer is that LinkedIn recommends a minimum of 10,000 email contacts for Matched Audiences (Contact Targeting). This is because a larger audience size improves the match rate between your uploaded contacts and active LinkedIn profiles, leading to a more effective and scalable campaign. With fewer contacts, the matched audience may be too small to deliver ads efficiently or achieve statistically significant results. Therefore, 5,000 email contacts would likely result in a matched audience that is too small for optimal performance according to LinkedIn's best practices.