Reduce Bounce Rates: Validating emails ensures that you are sending your campaigns to active email addresses, reducing the likelihood of bounces. Improve Sender Reputation: High bounce rates can harm your sender reputation. By validating emails, you maintain a good reputation with ISPs. Cost Efficiency: Most email marketing platforms charge based on the number of emails sent. Sending emails to invalid addresses is a waste of resources. Higher Engagement Rates: By ensuring that you are reaching real users, you can expect better engagement rates and higher ROI.