Developers building autonomous AI agents and the small-to-midsize businesses that deploy them are increasingly blocked by email identity friction: Google and Microsoft have tightened OAuth consent, app verification and security requirements, turning simple inbox access into multi‑week integrations that can trigger account suspensions. This affects an addressable base of roughly 2.0M businesses and underpins a $6.0B market (2.0M businesses × $3K ACV) for developer tooling and email identity services. You could build an API‑first platform that delivers “one‑line” OAuth and safe inbox access via SDKs, combining pre‑validated OAuth flows, short‑lived delegated credentials, a consent UX optimized for verification, transparent audit logging, and a proxy layer that enforces fine‑grained consent and rate limits on behalf of customers. Ship serverless SDKs, turnkey verification templates for Google/Microsoft reviews, and built‑in SOC2 controls so engineering teams integrate in hours rather than weeks; commercialize with a per‑connection + per‑seat pricing aligned to the ~$3K ACV SMB profile. Timing is favorable because AI agent adoption is accelerating, stacks are increasingly API‑centric, and the market scores highly (92/100) with solid revenue potential (84/100), although competition is medium. The product’s strengths are clear developer UX, reduced compliance lift for customers, and partnership-driven distribution; the principal challenges are maintaining provider trust, shouldering heavy security/compliance obligations, and staying adaptable to evolving OAuth policies.