You can increase open rates in cold emails by focusing on your subject line. A clear subject line grabs attention. Personalization makes your email stand out. Use the recipient's name or mention their company. Keep your email short and direct. Avoid generic greetings. Research your audience to know their needs. A strong call to action creates curiosity. Test different email formats to find the best. Ensure your sender name looks trustworthy. Avoid spammy words in your subject line. Sending emails at the right time improves results. Track your performance to make better decisions. Consistency helps you refine your approach.