Hard Bounce

A Hard Bounce occurs when an email cannot be delivered to the recipient's inbox for permanent reasons. Common causes include invalid email addresses, non-existent domains, or the recipient's server rejecting the email. Unlike soft bounces, which may be temporary, hard bounces signify a permanent failure. Managing and potentially avoiding hard bounces is crucial in email marketing (e.g., newsletters or marketing automation), as high bounce rates can negatively affect your organization’s sender reputation and overall deliverability.