Selfletter is a tool that leverages artificial intelligence to assist users in breaking down complex goals into simple tasks. It generates a detailed calendar plan based on user-defined goals and schedules and sends daily task reminders via email. Key advantages of the product include personalized task generation, learning from past experiences, aesthetically pleasing email design, and cost-effectiveness. Selfletter is ideal for users who need assistance in planning and executing complex tasks, whether for personal objectives, business plans, or educational projects.