Several factors affect email open rates. You must write compelling subject lines to grab attention. You should send emails at the right time when your audience is most active. You must ensure your email list is clean and targeted to the right audience. You can personalize emails to make recipients feel valued. You should use a recognizable sender name to build trust. You must avoid spam words that could land your email in the spam folder. You should segment your list to send relevant content. Consistently analyzing your open rates helps improve your strategy over time.