The ideal time to start holiday marketing is 2-3 months in advance, i.e., between September or October, though many people start much earlier. This allows you to prepare an email list of your potential customers and your online presence on social media. You need to spend time explaining and showing your customers why they should buy from you before they are ready to do so and accompany them throughout the sales process. It's also essential to start your Christmas marketing campaign early because it gives you an idea of what products are most in-demand and allows you to prepare your stock accordingly.