# Supabase email rate limit

> How to fix the Supabase 'email rate limit exceeded' error when testing auth emails, by setting up your own SMTP server in the authentication settings.

Author: [Flavio Copes](https://flaviocopes.com/about/) | Published: 2025-01-20 | Topics: [Services](https://flaviocopes.com/tags/services/) | Canonical: https://flaviocopes.com/supabase-email-rate-limit/

I need to remember this, when testing Supabase, their SMTP servers block after a few emails (5? 10? 15? few, anyway), so after a while you’re trying things, email will stop working and it’ll start giving you an error message back:

```text
Error: email rate limit exceeded
```

How to fix?

You need to use your SMTP server to go over that limit, in Settings → Authentication → SMTP Settings.