#22 most commonauthLovableBolt.newCursorWindsurfv0

Email rate limit exceeded (sign-up / reset emails stop sending)

AuthApiError: email rate limit exceeded / over_email_send_rate_limit

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What it means

Supabase's built-in email sender only allows a few emails per hour, meant for testing. You've hit that cap, so sign-up and password emails stop going out.

How to fix it: paste this prompt into your AI builder

Fix prompt for Lovable, Bolt, Cursor, v0, Windsurf
Supabase says "email rate limit exceeded". Add friendly handling of this error in the sign-up/reset UI, prevent double-submits that send duplicate emails, and tell me the steps to configure a custom SMTP provider in Supabase so real users get emails. Don't change unrelated code.

If the AI can't fix it: manual steps

  1. Supabase Authentication, Emails, SMTP settings: connect an email provider (e.g. Resend, Postmark, SendGrid).
  2. Then raise the email rate limit under Authentication, Rate Limits.

Where this happens

Seen in these AI app builders and editors:

LovableBolt.newCursorWindsurfv0

Sources

Related auth errors

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