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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.
Sage Fulcher
Hey I'm Sage! Im a Boston area software engineer who grew up in South Florida. Ive worked at a ton of cool places like a telehealth kidney care startup that took part in a billion dollar merger (Cricket health/Interwell health), a boutique design agency where I got to work on a ton of exciting startups including a photography education app, a collegiate Esports league and more (Philosophie), a data analytics as a service startup in Cambridge (MA) as well as at Phillips and MIT Lincoln Lab where I designed and developed novel network security visualizations and analytics. I've been writing code and furiously devoted to using computers to make people’s lives easier for about 17 years. My degree is in making computers make pretty lights and sounds. Outside of work I love hip hop, the Celtics, professional wrestling, magic the gathering, photography, drumming, and guitars (both making and playing them)
Kingsley Omage
Fullstack software engineer passionate about AI Agents, blockchain, LLMs.
Jaime Orts-Caroff
I'm a Senior Android developer, open to work in various fields
Franck Plazanet
I am a Strategic Engineering Leader with over 8 years of experience building high-availability enterprise systems and scaling high-performing technical teams. My focus is on bridging the gap between complex technology and business growth.
Core Expertise:
🚀 Leadership: Managing and coaching teams of 15+ engineers, fostering a culture of accountability and continuous improvement.
🏗️ Architecture: Enterprise Core Systems, Multi-system Integration (ERP/API/ETL), and Core Database Structure.
☁️ Cloud & Scale: AWS Expert; architected systems handling 10B+ monthly requests and managing 100k+ SKUs.
📈 Business Impact: Aligning tech strategy with P&L goals to drive $70k+ in monthly recurring revenue.
I thrive on "out-of-the-box" thinking to solve complex technical bottlenecks and am always looking for ways to use automation to improve business productivity.
Antriksh Narang
5 years+ Experienced Dev (Specially in Web Development), can help in python, javascript, react, next.js and full stack web dev technologies.
David Olverson
Solo dev shipping production apps with AI-assisted development. I specialize in rescuing broken Lovable/Bolt/Cursor builds and taking them to production. 10+ apps shipped including SaaS CRMs, gaming platforms, real estate tools, and Discord bots. Stack: Next.js 16, TypeScript, Tailwind CSS, FastAPI, PostgreSQL, Prisma. I use Claude Code with 50+ custom skills for rapid delivery. Average turnaround: 2-4 weeks from broken prototype to production.
Costea Adrian
Embedded Engineer specilizing in perception systems. Latest project was a adas camera calibration system.
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.
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
Dor Yaloz
SW engineer with 6+ years of experience,
I worked with React/Node/Python
did projects with React+Capacitor.js for ios
Supabase expert
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.