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Email Verification Flow Broken in Lovable App
Your Lovable app's email verification flow is broken. Users sign up but can't verify their email because the verification link doesn't work, leads to an error page, has already expired, or the verification email never arrives.
Email verification is essential for preventing fake accounts and ensuring users own their email address. When it's broken, legitimate users are locked out of your app after signing up, creating a terrible first impression.
The issue might be specific to certain email providers, or it might affect all users. Some users receive the email but the link fails; others never receive the email at all.
Error Messages You Might See
Email link is invalid or has expired
Error: Invalid token
Auth callback error: invalid_grant
Redirect URL mismatch
Common Causes
- Wrong redirect URL — The verification link points to localhost or the wrong domain
- Supabase email template misconfigured — The confirmation URL template in Supabase uses wrong variables or format
- Token expired — Email verification tokens expire before users click the link (default may be too short)
- Email caught by spam filter — Verification emails are caught by spam filters, especially for corporate email addresses
- Missing redirect handling — The app doesn't handle the redirect after Supabase verifies the email
How to Fix It
- Check Supabase email templates — Go to Supabase dashboard → Authentication → Email Templates and verify the confirmation URL uses {{ .ConfirmationURL }}
- Verify redirect URL configuration — In Supabase dashboard → Authentication → URL Configuration, make sure the Site URL and Redirect URLs include your production domain
- Extend token expiry — Increase the email OTP expiry in Supabase Auth settings if users complain about expired links
- Handle the auth callback — Ensure your app has a route that handles the auth callback and exchanges the token for a session
- Test the full flow — Sign up with a new email and follow the complete verification path to find exactly where it breaks
Real developers can help you.
Daniel Vázquez
Software Engineer with over 10 years of experience on Startups, Government, big tech industry & consulting.
Alvin Voo
I’ve watched the tech landscape evolve over the last decade—from the structured days of Java Server Pages to the current "wild west" of Agentic-driven development. While AI can "vibe" a frontend into existence, I specialize in the architecture that keeps it from collapsing.
My expertise lies in the critical backend infrastructure: the parts that must be fast, secure, and scalable. I thrive on high-pressure environments, such as when I had only three weeks to architect and launch an Ethereum redemption system with minimal prior crypto knowledge, turning it into a major revenue stream.
What I bring to your project:
Forensic Debugging: I don't just "patch" bugs; I use tools like Datadog and Explain Analyzers to map out bottlenecks and resolve root causes—like significantly reducing memory usage by optimizing complex DB joins.
Full-Stack Context: Deep experience in Node.js and React, ensuring backends play perfectly with mobile and web teams.
Sanity in the Age of AI: I bridge the gap between "best practices" and modern speed, ensuring your project isn't just built fast, but built to last.
zipking
I am a technologist and product builder dedicated to creating high-impact solutions at the intersection of AI and specialized markets. Currently, I am focused on PropScan (EstateGuard), an AI-driven SaaS platform tailored for the Japanese real estate industry, and exploring the potential of Archify.
As an INFJ-T, I approach development with a "systems-thinking" mindset—balancing technical precision with a deep understanding of user needs. I particularly enjoy the challenge of architecting Vertical AI SaaS and optimizing Small Language Models (SLMs) to solve specific, real-world business problems. Whether I'm in a CTO-level leadership role or hands-on with the code, I thrive on building tools that turn complex data into actionable value.
Omar Faruk
As a Product Engineer at Klasio, I contributed to end-to-end product development, focusing on scalability, performance, and user experience.
My work spanned building and refining core features, developing dynamic website templates, integrating secure and reliable payment gateways, and optimizing the overall system architecture.
I played a key role in creating a scalable and maintainable platform to support educators and learners globally.
I'm enthusiastic about embracing new challenges and making meaningful contributions.
Richard McSorley
Full-Stack Software Engineer with 8+ years building high-performance applications for enterprise clients. Shipped production systems at Walmart (4,000+ stores), Cigna (20M+ users), and Arkansas Blue Cross. 5 patents in retail/supply chain tech. Currently focused on AI integrations, automation tools, and TypeScript-first architectures.
Jared Hasson
Full time lead founding dev at a cyber security saas startup, with 10 yoe and a bachelor's in CS. Building & debugging software products is what I've spent my time on for forever
Jen Jacobsen
I’m a Full-Stack Developer with over 10 years of experience building modern web and mobile applications. I enjoy working across the full product lifecycle — turning ideas into real, well-built products that are intuitive for users and scalable for businesses.
I particularly enjoy building mobile apps, modern web platforms, and solving complex technical problems in a way that keeps systems clean, reliable, and easy to maintain.
Yovel Cohen
I got a lot of experience in building Long-horizon AI Agents in production, Backend apps that scale to millions of users and frontend knowledge as well.
Tejas Chokhawala
Full-stack engineer with 5 years experience building production web apps using React, Next.js and TypeScript.
Focused on performance, clean architecture and shipping fast.
Experienced with Supabase/Postgres backends, Stripe billing, and building AI-assisted developer tools.
Antriksh Narang
5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies.
You don't need to be technical. Just describe what's wrong and a verified developer will handle the rest.
Get HelpFrequently Asked Questions
How long should verification links be valid?
At least 24 hours. Many users don't check email immediately. Supabase default is 24 hours but you can extend it in Authentication → Settings.
Can I skip email verification?
Technically yes — you can disable it in Supabase Auth settings. But this allows fake accounts and makes it impossible to send password reset emails, so it's not recommended for production apps.