Domain Authentication: Authenticate your domain with SPF, DKIM, and DMARC to improve email deliverability. Email Service Provider (ESP): Choose a reliable ESP that offers features like automation, analytics, and segmentation. Sender Name and Address: Use a recognizable sender name and email address to build trust with your recipients. Segmentation: Segment your email list to send targeted messages to different groups of subscribers. Personalization: Personalize your emails to make them more relevant to your subscribers. Mobile Optimization: Ensure your emails are optimized for mobile devices as a significant portion of users check emails on their phones.