The right time to start email marketing for your startup is early. You can begin as soon as you have a product or service. Building your email list should start before your launch. You can create a sign-up form to gather interested leads. Early email campaigns can generate excitement. You can use them to announce your launch date. You can share updates about your progress with your audience. Starting early allows you to build relationships with potential customers. You can create awareness before selling anything. Email marketing helps you establish trust. Early efforts set a strong foundation for future success.