Batch-and-Blast Emails: Sending the same email to your entire list without segmentation or personalization is no longer effective. Today's consumers expect tailored content that speaks directly to their needs and interests. Ignoring Mobile Optimization: With the majority of emails now being opened on mobile devices, failing to optimize for mobile can result in poor user experience and lower engagement rates. Overloading with Images: While images can enhance an email's visual appeal, overloading your emails with too many images can lead to slow load times and may trigger spam filters. Outdated Metrics: Relying solely on open rates and click-through rates without considering more advanced metrics such as conversion rates and customer lifetime value can provide a limited view of your campaign's success.