The 80/20 rule, also known as the Pareto principle, is a concept that can be applied to many areas of business, including email marketing. In this context, it suggests that 80% of your results (such as opens, clicks, and conversions) will come from 20% of your efforts (such as your highest-performing emails or subscribers). In email marketing, this means that you should focus on delivering high-quality content to your subscribers, targeting the 20% of your audience who are most engaged and likely to take action. This may involve segmenting your audience based on their behavior or interests and tailoring your content to their specific needs. At the same time, it’s important to avoid overwhelming your subscribers with too many emails, as this can lead to unsubscribes and reduced engagement. Instead, focus on providing value and building a relationship with your subscribers, using the 80/20 rule as a guideline for optimizing your email marketing strategy.