Market Score: Developers often need simple email sending solutions, and a self-hosted, HTTP-based approach targets a niche but growing demand for control and privacy. Feasibility Score: A minimal, single-file Python project with no external dependencies is highly feasible for an MVP within weeks. Competition Score: While email services exist, a self-hosted, no-SMTP, HTTP-based solution offers a distinct advantage over traditional SMTP servers and complex APIs. Localization Score: The core functionality is language-agnostic and can be deployed anywhere, with configuration for API keys and endpoints being easily adaptable globally.