Getting a 90% open rate is challenging but possible with the right approach. You must start by segmenting your email list. You should target recipients who are already interested in your content. Personalize your emails. You should address the recipient by name and tailor the content. Create attention-grabbing subject lines. You must make the subject line relevant and intriguing. Make sure your emails are mobile-friendly. You must optimize for different devices. Focus on providing value. You should offer something useful to your audience. Test your emails. You must analyze and adjust based on results. Consistency is key.