Verify your users own their email. No passwords to manage, no backend required. Just redirect, verify, done.
// 1. Redirect to Signonix const url = `https://signonix.com/login.html?client_id=${YOUR_ID}&return_to=${location.href}`; // 2. User verifies their email, returns with a ticket // 3. Verify the ticket, get a user ID const { static_id } = await fetch(`/auth/verify-ticket?ticket=${ticket}`).then(r => r.json());
Send users to Signonix with your client ID and return URL.
User enters email, gets a code, proves they own it.
User returns to your app with a ticket. Verify it, get a user ID.
See why teams switch to the simplest email verification service.
| Signonix | Auth0 | Firebase Auth | Clerk | |
|---|---|---|---|---|
| Setup time | 3 minutes | Hours | 30 min | 15 min |
| Backend required | ✗ No | ✓ Yes | ✓ Yes | ✓ Yes |
| Passwordless by default | ✓ Yes | Add-on | Add-on | Add-on |
| Pricing starts at | Free | $23/mo | Free (limited) | $25/mo |
| Code to integrate | 3 lines | 100+ lines | 50+ lines | 30+ lines |
| Privacy-first | ✓ Yes | ✗ No | ✗ No | ✗ No |
Works with static sites, SPAs, and Jamstack. Verify users directly from the browser with our frontend-safe API.
No passwords to hash, store, or reset. Users verify via email — the most secure and familiar method.
Customize the login page and emails with your logo, colors, and name. Looks like your app, powered by us.
We verify emails, you manage users. Minimal data retention, GDPR compliant, and users can delete anytime.
Get notified when users authenticate, grant permissions, or delete their accounts. Build reactive apps.
View login stats, manage settings, and rotate API keys. Self-service tools for your team.
Pay for what you use. No monthly minimums.
No credit card. No config files. Just drop in three lines of code and go.
Create Free Account