The impact of breaches in email marketing can be severe. Firstly, they can lead to a loss of trust from your subscribers. If they feel their data is not secure, they may choose to unsubscribe or even report your emails as spam. Secondly, breaches can lead to significant financial losses, especially if sensitive information is leaked or if you face penalties for not complying with data protection regulations like the GDPR or CCPA. Lastly, breaches can damage your brand's reputation, making it harder to attract new subscribers or retain existing ones.