DMARC can positively impact the deliverability of legitimate emails by providing a mechanism for email receivers to verify that the sending domain has authorized the use of their domain in email messages. This helps to prevent email spoofing and impersonation, which are commonly used in phishing and malware attacks. When a domain has a strong DMARC policy in place, it can increase the chances of legitimate emails being delivered to recipients’ inboxes instead of being blocked or sent to spam folders. In addition, DMARC allows senders to receive feedback on email authentication failures, allowing them to quickly identify and remediate any issues with their email authentication setup.