Email Marketing Service Cost is influenced by factors such as list size, desired features, and the service provider. Entry-level plans can start as low as $10 per month, while advanced options, which may include automation, segmentation, and detailed analytics, can reach $100 or higher. Some companies also offer pay-as-you-go models or free plans with limited features, making it easier for businesses to choose a pricing structure that aligns with their needs and marketing goals.