A custom domain name mailbox based on Cloudflare Workers + Email Routing to obtain verification code API, no front-end lightweight, the entire process relies on free services, suitable for registration machine scripts.一个基于Cloudflare Workers + Email Routing的自定义域名邮箱获取验证码API，无前端轻量化，全程依赖免费服务，适用于注册机脚本。