Notion

This guide explains how to set up single sign-on (SSO) between SmartLink and Notion using SAML 2.0.

Prerequisites

• Notion Enterprise Plan
• Administrative access to Notion
• Verified email domain in Notion
• Application configured in SmartLink with SAML2

Note: SAML SSO is only available with the Notion Enterprise plan.

Configuration in SmartLink

1. Create the application

1. Log in to SmartLink as an administrator
2. Go to Applications → Add
3. Create a new application:
   • Name: Notion
   • URL: https://notion.so
   • Description: All-in-one workspace for notes and collaboration
   • Icon: Choose the Notion icon

2. Configure SAML2

1. In the Authentication tab
2. Select SAML2
3. Configure the following parameters:
   • Entity ID: https://[your-smartlink].link.vaultys.org/[appid]
   • ACS URL: https://www.notion.so/sso/saml
   • Format NameID: emailAddress
   • App ID: [appid] (automatically generated unique identifier)

3. Retrieve the metadata

Note the following URLs:

• IdP Metadata: https://[your-smartlink].link.vaultys.org/api/saml2/[appid]/metadata
• SSO URL: https://[your-smartlink].link.vaultys.org/api/saml2/sso/[appid]
• SLO URL: https://[your-smartlink].link.vaultys.org/api/saml2/slo/[appid]
• Entity ID: https://[your-smartlink].link.vaultys.org/[appid]
• X.509 Certificate: Download from SmartLink

Configuration in Notion

1. Access SSO settings

1. Log in to Notion as an administrator
2. Go to Settings & Members
3. Click on Security & identity
4. In the SSO section, click on Configure SAML

2. Configure SAML

Fill in the following fields:

Identity Provider Configuration

• Identity provider SSO URL: https://[your-smartlink].link.vaultys.org/api/saml2/sso/[appid]
• Identity provider issuer: [appid]
• Public certificate: Paste the X.509 certificate from SmartLink

Service Provider Configuration

• Entity ID: notion.so (generated by Notion)
• ACS URL: https://www.notion.so/sso/saml (generated by Notion)

3. Attribute configuration

Configure the SAML attribute mapping:

Notion Attribute	SAML Attribute	Required
Email	email	✅
First Name	firstName	✅
Last Name	lastName	✅
Display Name	displayName	❌

4. Advanced configuration

Automatic provisioning

• Auto-provisioning: Enabled
• Update user info on login: Enabled
• Remove users on SCIM deprovision: As per your policy

Allowed domains

1. Add your company domains
2. Verify them via DNS (TXT record)
3. Enable Enforce SSO for these domains

Workspace configuration

Organization of workspaces

workspaces:
  - name: "Engineering"
    default_access: "member"
    groups:
      - "smartlink-engineering"
      - "smartlink-developers"
  
  - name: "Marketing"
    default_access: "guest"
    groups:
      - "smartlink-marketing"
  
  - name: "HR"
    default_access: "no_access"
    groups:
      - "smartlink-hr"
      - "smartlink-management"

Default permissions

Configure in Notion:

1. Settings & Members → Workspace settings
2. Default permissions :
   • Members can invite: ❌
   • Members can create groups: ❌
   • Members can export: ✅
   • Members can use API: ✅

Group and permission management

SCIM Configuration (optional)

For automatic group synchronization:

{
  "scim_endpoint": "https://www.notion.so/scim/v2",
  "scim_token": "bearer_token_xxxxxx",
  "group_mappings": {
    "smartlink-admins": "workspace_admin",
    "smartlink-editors": "content_editor",
    "smartlink-viewers": "content_viewer"
  }
}

Available roles

Role	Permissions
Workspace Owner	Full access, billing management
Admin	Member and settings management
Member	Content creation and editing
Guest	Limited access to specific pages

Configuration testing

1. Connection test

1. Open a private browsing window
2. Go to notion.so/login
3. Click on Continue with SAML SSO
4. Enter your work email
5. You will be redirected to SmartLink
6. After authentication, you will access Notion

2. Application testing

• Desktop: Desktop application supports SSO via browser
• Mobile: iOS and Android support SSO
• Web Clipper: Browser extension compatible with SSO

3. API verification

// Notion API test with authentication
const { Client } = require('@notionhq/client');

const notion = new Client({
  auth: process.env.NOTION_TOKEN,
});

async function testConnection() {
  const response = await notion.users.me();
  console.log(response);
}

Integration with Notion API

Integration configuration

1. Settings & Members → My connections
2. Develop or manage integrations
3. Create a new integration:

{
  "name": "SmartLink Integration",
  "capabilities": {
    "read_content": true,
    "update_content": true,
    "insert_content": true
  },
  "oauth_redirect_uri": "https://[your-smartlink].link.vaultys.org/callback"
}

Webhooks for synchronization

// Webhook for syncing changes
app.post('/webhook/notion', async (req, res) => {
  const { type, data } = req.body;
  
  switch(type) {
    case 'page.created':
      await syncNewPage(data);
      break;
    case 'database.updated':
      await syncDatabase(data);
      break;
  }
  
  res.status(200).send('OK');
});

Troubleshooting

Error "SAML configuration is invalid"

Issue: Incorrect SAML configuration

Solution:

1. Verify that the Entity ID is [appid]
2. Check the format of the X.509 certificate (without extra spaces or line breaks)
3. Ensure that the ACS URL is: https://www.notion.so/sso/saml

Error "User email domain not authorized"

Issue: Email domain is not verified

Solution:

1. In Notion → Security & identity → Domain management
2. Add and verify your domain
3. Add the DNS TXT record provided by Notion

Users are not automatically created

Issue: Auto-provisioning is not working

Solution:

1. Check that Auto-provisioning is enabled
2. Ensure that the mandatory SAML attributes are present:
   • email
   • firstName
   • lastName
3. Check the SAML logs in Notion

Group synchronization issue

Issue: Groups are not mapped correctly

Solution:

<!-- Correct SAML assertion for groups -->
<saml:Attribute Name="groups">
  <saml:AttributeValue>smartlink-notion-admins</saml:AttributeValue>
  <saml:AttributeValue>smartlink-notion-users</saml:AttributeValue>
</saml:Attribute>

Security

Best practices

1. Enforce SSO: Enable SSO requirement for all users
2. Session timeout: Configure an appropriate session duration (8h recommended)
3. 2FA backup: Maintain an admin account with 2FA as backup
4. Audit logs: Regularly review logs in Settings → Audit log
5. API tokens: Manage integration API tokens separately

Advanced security configuration

{
  "security_settings": {
    "enforce_sso": true,
    "session_duration": "8h",
    "allow_public_sharing": false,
    "disable_guests": false,
    "disable_export": false,
    "watermark_exports": true,
    "audit_log_retention": "365d"
  }
}

Compliance and privacy

• GDPR: Notion is GDPR compliant
• SOC 2: Certification available
• Encryption: AES 256 at rest, TLS 1.2+ in transit
• Data localization: Choose your region (US/EU)

Migration of existing users

Migration script

import requests
import csv

def migrate_notion_users(csv_file):
    """Migrate users to SSO"""
    with open(csv_file, 'r') as file:
        reader = csv.DictReader(file)
        for row in reader:
            user_email = row['email']
            
            # Send SSO invitation
            send_sso_invitation(user_email)
            
            # Disable old access
            disable_password_login(user_email)
            
            print(f"Migrated: {user_email}")

def send_sso_invitation(email):
    # Logic to send the invitation
    pass

User communication

Email template for migration:

Subject: Migration to Single Sign-On (SSO) for Notion

Hello,

Starting from [DATE], we are migrating to single sign-on for Notion.

Required actions:
1. Use your work email to log in
2. You will be redirected to SmartLink
3. Use your usual SmartLink credentials

Benefits:
- Single password to remember
- Enhanced security
- Simplified access

Support: support@company.com

Resources

• Notion SSO Documentation
• Notion API
• Notion Admin Guide
• SmartLink SAML Configuration
• Notion Community Forum