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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.
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
Matthew Jordan
I've been working at a large software company named Kainos for 2 years, and mainly specialise in Platform Engineering. I regularly enjoy working on software products outside of work, and I'm a huge fan of game development using Unity. I personally enjoy Python & C# in my spare time, but I also specialise in multiple different platform-related technologies from my day job.
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)
Costea Adrian
Embedded Engineer specilizing in perception systems. Latest project was a adas camera calibration system.
Caio Rodrigues
I'm a full-stack developer focused on building practical and scalable web applications. My main experience is with **React, TypeScript, and modern frontend architectures**, where I prioritize clean code, component reusability, and maintainable project structures.
I have strong experience working with **dynamic forms, state management (Redux / React Hook Form), and complex data-driven interfaces**. I enjoy solving real-world problems by turning ideas into reliable software that companies can actually use in their daily operations.
Beyond coding, I care about **software quality and architecture**, following best practices for componentization, code organization, and performance optimization.
I'm also comfortable working across the stack when needed, integrating APIs, handling business logic, and helping transform prototypes into production-ready systems.
My goal is always to deliver solutions that are **simple, efficient, and genuinely useful for the people using them.**
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.
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.
Stanislav Prigodich
15+ years building iOS and web apps at startups and enterprise companies. I want to use that experience to help builders ship real products - when something breaks, I'm here to fix it.
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
BurnHavoc
Been around fixing other peoples code for 20 years.
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.