Register users and authenticate with magic links using Google Sheets
This workflow implements a lightweight authentication system for n8n web portals using Google Sheets as a simple user and session store. It supports email-based registration, username and password login, one-click magic link authentication, and cookie-based session management. How it works 1. Users register with an email address through a form. 2. The workflow generates a password and a one-time authentication token. 3. User credentials and token are stored in Google Sheets. 4. An email is sent
At a glance
Register users and authenticate with magic links using Google Sheets is a ready-made n8n workflow you import as a workflow JSON file — no build required. It connects Gmail, Google Sheets. It's free to download. Follow the 5-step import below to go live in minutes.
- Platform
- n8n
- Connects
- Gmail, Google Sheets
- Modules
- 30
- Price
- Free
- Version
- v1.0

About this workflow
This workflow implements a lightweight authentication system for n8n web portals using Google Sheets as a simple user and session store. It supports email-based registration, username and password login, one-click magic link authentication, and cookie-based session management. How it works 1. Users register with an email address through a form. 2. The workflow generates a password and a one-time authentication token. 3. User credentials and token are stored in Google Sheets. 4. An email is sent with login credentials and a magic link. 5. Users can log in with username and password or click the magic link. 6. The /auth endpoint validates the token, creates a session id (sid), sets it as an HttpOnly cookie, and invalidates the token. 7. The /profile endpoint reads the sid cookie, verifies the session in Google Sheets, and displays a protected profile page. Set up steps - Create a Google Sheet with columns: username, password, role, token, sid. - Replace YOURSPREADSHEETID with your Google Sheet ID in all Google Sheets nodes. - Replace YOURDOMAIN with your n8n instance domain in redirect URLs and email links. - Configure Gmail or SMTP credentials in the email node. - Ensure your n8n instance is served over HTTPS so Secure cookies function correctly. This template is suitable for small internal portals, admin dashboards, or proof-of-concept authentication systems built entirely within n8n.
How to import this n8n workflow
- 1
Download the workflow JSON file after purchase.
- 2
Open n8n → click the menu → Import from File.
- 3
Select the downloaded JSON and import.
- 4
Set up credentials for each node that requires them.
- 5
Click Execute Workflow to test, then activate.
Setup guide
Setup guide included
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- JSON blueprint — instant download
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