Removing hard bounces is critical for several reasons:
Sender Reputation: High bounce rates can damage your sender reputation, making it more likely for your emails to be marked as spam. Deliverability: A poor sender reputation can lead to lower email deliverability rates, meaning fewer of your emails make it to the inbox. Cost Efficiency: Many email service providers (ESPs) charge based on the number of emails sent. Sending emails to invalid addresses is a waste of resources.