<ul data-eligibleForWebStory="true">Email marketing is a highly effective digital channel, but businesses often make avoidable mistakes that can harm campaign performance and reputation.One common mistake is poor audience segmentation, where sending identical content to all subscribers leads to lackluster results.Subject lines play a crucial role in email success, with vague or deceptive lines leading to decreased open rates.Designing emails for mobile devices is essential as over 60% of emails are opened on smartphones.Finding the right email frequency is important to avoid subscriber fatigue and maintain engagement.Marketers should focus on relevant metrics like conversion rates and list health rather than just open rates.Legal compliance with regulations like GDPR and CAN-SPAM is crucial to maintain trust and avoid penalties.Partnering with an Email Marketing Agency can help businesses avoid these mistakes and implement proven strategies.Successful email marketing lies in treating subscribers as individuals and providing them with valuable, relevant content.