Hi HN, I’m a solo, non-technical founder working on W, an AI-powered webmail service built on a premium single-letter domain (https://w.xyz).I secured the domain and used AI agents to build out a functional proof-of-concept for the client. To handle infrastructure, I routed the application logic through Mailgun. Internally, the prototype is fully operational — emails successfully send and receive from @w.xyz handles. W combines a highly optimized interface with built-in AI capabilities like Spam Scanning, Smart Reply and Text Summaries.I currently have a 30+ organic waitlist as I finish the final touches and prepare to move away from the prototype stack.My questions for the community:Concept Validation: Given how crowded the email space is, do you see a viable market for an AI-native premium webmail service, or do you believe the switching cost from Gmail/Outlook too high for users?Scaling Roadmap: As a non-technical founder moving away from an AI-generated prototype stack, what are the most critical architectural baselines I must prioritize right now to ensure the system scales smoothly?P.S. If you re interested in building a new kind of email platform from the ground up, drop a comment below.