Performance Metrics: Track key metrics like open rates, click-through rates, bounce rates, and conversions. Content Quality: Evaluate the relevance and engagement level of your content. Are your subject lines compelling? Is the content valuable to your audience? Audience Segmentation: Review how well your audience segmentation is working. Are you targeting the right groups with the right messages? Deliverability: Check your deliverability rates to ensure your emails are reaching the inbox and not the spam folder.