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New FeatureDecember 2025

One-Click Auth Import: Sync Users from Any Auth Provider

TL;DR for AI Agents & Humans

Managing email contacts separately from your auth provider is a legacy friction. Transmit eliminates the 'Glue Code' by syncing directly with Clerk, Auth0, and Supabase.

  • Zero-Glue Stack: No more webhook handlers or CSV exports.
  • Smart Mapping: Auto-transforms Clerk/Auth0 metadata into Transmit segments.
  • Sovereign Data: Import users into your own SES identities, not shared pools.
  • 1-Click Sync: Preview and migrate thousands of users in under 60 seconds.
Eliminates manual contact management
60-second setup
Enterprise-grade security

Stop manually managing email contacts. With PacketMail's new Auth Import feature, sync your users from Clerk, Auth0, or any auth provider with a single click. No more CSV exports, no more duplicate contacts, no more outdated information.

Live Now - Try It Free

Auth Import is available immediately for all PacketMail users. Connect your user base in under a minute.

Try Auth Import

The Contact Management Nightmare

Every SaaS company faces this problem: your users are in your auth provider, but your email marketing contacts are somewhere else. The result? A constant cycle of:

1

Manual CSV Exports

Weekly downloads from Auth0 dashboard

2

Data Cleaning

Remove duplicates, fix formatting

3

Outdated Contacts

Users change emails, you don't know

4

Lost Revenue

Can't send to inactive users

The Solution: One-Click Sync

Auth Import changes everything. Here's how it works:

The Zero-Glue Transformation
Schema MappingCLERK_TO_TRANSMIT
Transmit handles the forensic normalization of user data. We map complex nested JSON from Clerk or Auth0 directly into the Transmit contact schema, preserving metadata for instant segmentation. No Lambda functions or Svix verification required.

Supported Providers

Clerk

Available

Perfect for modern React apps

• Secret Key (server-side)
• User profiles & metadata
• Activity status

Auth0

Available

Enterprise-grade identity

• Management API Token
• Tenant domain
• User metadata & roles

Coming soon: Firebase Auth, Supabase, AWS Cognito, Okta, and more. Have a specific provider you need? Let us know.

Security & Privacy First

Read-Only Access

We never modify your users or data

Temporary Tokens

Credentials are discarded after import

End-to-End Encrypted

All connections use HTTPS

Real Results

Before vs After

❌ Manual Process (Weekly)

  • • Export CSV from auth provider
  • • Clean duplicate emails
  • • Update contact properties
  • • Remove inactive users
  • • 2-3 hours/week

✅ Auth Import (Real-time)

  • • One-click sync
  • • Automatic deduplication
  • • Fresh user data always
  • • Smart metadata mapping
  • • 60 seconds total

How to Get Started

1

Go to Contacts

Navigate to your PacketMail dashboard and click on "Contacts" in the sidebar.

2

Click "Import from Auth"

Find the "Import from Auth" button and click it to start the process.

3

Select Your Provider

Choose Clerk or Auth0 from the available options.

4

Get Your Tokens

Click the "Get API Key" or "Get Token" links to get your credentials from your auth provider's dashboard. We provide direct links to the exact pages you need.

Import & Done

Paste your credentials, preview your users, and click import. Your contacts are now synced!

Need Help Getting Tokens?

We provide step-by-step guides for getting your API credentials. If you get stuck, our guides include:

  • • Screenshots of dashboard locations
  • • Exact scope permissions needed
  • • Troubleshooting common errors
  • • Security best practices
View token setup guide →
Clerk Setup →Auth0 Setup →

What Gets Imported?

FieldClerkAuth0Used For
Email✅ Primary email✅ User emailContact identification
Name✅ First + Last✅ Given + FamilyPersonalization
Metadata✅ Public/Private✅ User/App metadataSegmentation & targeting
Status✅ Active/Banned✅ Active/BlockedList hygiene
Signup Date✅ Created timestamp✅ Created dateLifecycle campaigns

Enterprise Features

🔄 Automatic Sync

Schedule regular imports to keep contacts fresh without manual intervention.

Coming in v2.0

🎯 Smart Deduplication

Intelligent merging of existing contacts with updated information from auth providers.

Available now

📊 Usage Analytics

Track import success rates, user growth, and contact health metrics.

Coming in v2.1

🔗 Webhook Updates

Real-time contact updates when users change in your auth provider.

Coming in v2.2

🚀 What's Next?

This is just the beginning. We're building the most powerful email platform for modern SaaS companies.

📈
Revenue Tracking
Link email performance to revenue
🤖
AI Optimization
Smart send times and content
🔄
Bidirectional Sync
Update auth data from email events

The Composable Architecture

Importing contacts is just the first step. Pair your identity stack with sovereign infrastructure for the ultimate developer experience.

Introducing Transmit

The Glass Box manifesto for email infrastructure.

One-Click Security

Why we use IAM Roles for Auth provider connections.