Your seasonal greetings should be concise and heartfelt. They can include a mixture of text and visuals such as festive images or animations. It’s also a good idea to include a call-to-action (CTA), whether it’s a special holiday discount, a link to your latest blog post, or an invitation to follow your brand on social media. Personalization is key; addressing your customers by their first names can make the greeting feel more personal and less like a mass email.