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Vercel’s new emulate.dev fixes testing third party integrations

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Mar 26, 2026
6:54

Emulate: https://emulate.dev Inbox Zero: https://getinboxzero.com UPDATE: they merged in my PR. Emulate now supports Gmail, Goole Calendar, and Google Drive APIs! I set up Emulate Dev to replace Google's API with a local clone for Inbox Zero. It runs a fully stateful, high-fidelity emulator on localhost; no network, no rate limits, no OAuth headaches. I demo the full setup from config to a working Google login against the fake server. 00:00 What Is Emulate.dev? 00:45 Why Local API Emulation Matters 02:30 Setting Up Google OAuth Locally 05:32 Live Login Demo 06:17 Limits and Next Steps 1️⃣ Emulate Dev creates local drop-in replacements for Google & GitHub APIs 2️⃣ Fully stateful with an in-memory database — no external dependencies 3️⃣ Routes API calls to localhost ports instead of real endpoints 4️⃣ Google OAuth login works against the emulated server 5️⃣ Gmail API coverage is limited — plan to expand or contribute upstream =================== My open source product, Inbox Zero: Inbox Zero organizes your inbox, drafts replies in your voice, and helps you reach inbox zero fast. Never miss an important email again. https://getinboxzero.com GitHub: https://github.com/elie222/inbox-zero ⭐ =================== Follow me on X: https://x.com/elie2222 Join the Newsletter: https://aiopensource.substack.com/ #emulatedev #googleapi #aicoding #devtools #testing #cicd #oauth #mockapi

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Vercel’s new emulate.dev fixes testing third party integrations | NatokHD