Several types of data should be meticulously recorded to enhance your email marketing efforts:
Subscriber Information: Names, email addresses, and demographic details. Engagement Metrics: Open rates, click-through rates, and conversion rates. Behavioral Data: Purchase history, browsing behavior, and preferences. Campaign Performance: Data on the performance of individual campaigns such as dates sent, subject lines, and content variations. Unsubscribe and Complaint Data: Information on who unsubscribed and why, as well as any complaints received.