Phishing can negatively impact a company's email marketing metrics by: - Reducing Open Rates: Customers may become hesitant to open emails, fearing they might be phishing attempts. - Increasing Unsubscribe Rates: Recipients might unsubscribe from email lists to avoid potential phishing attacks. - Damaging Sender Reputation: If phishing emails are reported as spam, it can affect the sender's reputation and deliverability rates.