> ## Documentation Index
> Fetch the complete documentation index at: https://docs.mailofly.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Supabase Quickstart

> How to configure Mailofly as the custom SMTP provider for Supabase Auth.

# Supabase Mailofly Quickstart

Supabase provides built-in authentication, but defaults to a strict rate limit of 3 emails per hour on its free built-in email service.

By connecting Mailofly as your custom SMTP provider, you get unlimited auth emails, higher deliverability, and real-time open and click tracking.

***

## 1. Get Your Mailofly SMTP Credentials

In your Mailofly dashboard, go to **[SMTP Gateway](https://www.mailofly.com/user/smtp)**:

* **Host**: `smtp.mailofly.com`
* **Port**: `587`
* **Username**: Your Mailofly API Key (`mf_live_...`)
* **Password**: Your Mailofly API Key (`mf_live_...`)

***

## 2. Configure Supabase

1. Open your **Supabase Dashboard** and select your project.
2. Navigate to **Project Settings** > **Authentication** > **SMTP Settings**.
3. Toggle **Enable Custom SMTP** to **ON**.
4. Fill in the fields:
   * **Sender email**: An address using your verified domain (e.g. `auth@yourdomain.com`).
   * **Sender name**: Your application name (e.g. `Acme App`).
   * **Host**: `smtp.mailofly.com`
   * **Port**: `587`
   * **Username**: `mf_live_your_key`
   * **Password**: `mf_live_your_key`
5. Click **Save**.

***

## 3. Test the Setup

Trigger a password reset or sign-up confirmation email from your app. Check your Mailofly **Logs** dashboard to confirm the message was accepted, dispatched, and tracked.


## Related topics

- [Supabase](/smtp/supabase.md)
- [Supabase Go-Live Checklist](/guides/tutorials/supabase-go-live-checklist.md)
- [MCP Quickstart](/mcp-server/quickstart.md)
- [Integrations](/integrations/index.md)
- [Examples](/examples/index.md)