Maintaining an effective suppression list is essential for several reasons:
Compliance: Adhering to regulations such as GDPR, CAN-SPAM, and CASL requires honoring opt-out requests and not sending unwanted emails. Reputation Management: Sending emails to those who have unsubscribed or complained can damage your sender reputation, leading to deliverability issues. List Hygiene: Keeping your email list clean by removing invalid or inactive addresses improves overall engagement rates.