To increase both CTR and open rate in email marketing. you must focus on several key factors. First, write compelling subject lines to increase open rates. You should make the subject line relevant and personalized. Second, ensure your email content matches the expectations set by the subject line. You must make your call to action (CTA) clear and easy to follow. You should test different CTA placements and designs to see what works best. Third, segment your email list for targeted messaging. You must regularly clean your list to keep it engaged and avoid sending irrelevant content.