1. Personalization: Use the recipient's name and tailor the content to their preferences. This not only improves engagement but also complies with GDPR's requirement for relevance.
2. Plain Text Version: Always include a plain text version of your email. This helps with accessibility and ensures that your message is readable on any device.
3. Mobile Optimization: Ensure that your emails are mobile-friendly. A significant portion of emails are opened on mobile devices, and poor formatting could lead to high unsubscribe rates.