Data redundancy can create several issues for email marketing campaigns:
Increased Costs: Sending multiple emails to the same address can increase your email distribution costs. Reduced Deliverability: Email providers may flag your campaigns as spam if they detect numerous duplicate emails being sent. Data Management Issues: Managing and analyzing redundant data can be cumbersome and time-consuming. Poor User Experience: Recipients may be annoyed by receiving the same email multiple times, leading to unsubscribes or complaints.