Custom SMTP for Supabase Email Authentication | Complete Setup + Testing

Learn how to connect your own custom SMTP email server with Supabase for user authentication, signup verification emails, magic links, and more!

In this tutorial, I’ll show you step-by-step how to set up SMTP using a Hostinger email (works with any email hosting like Gmail, Zoho, Outlook, etc.).

✅ In this video you’ll learn:

1. How to use your custom domain email (like support@yourdomain.com)
2. How to configure environment variables in Supabase
3. Testing the email verification flow

By the end of this tutorial, you will be able to send email verification using your own email address — not Supabase’s default sender!

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