# Supabase Auth {% hint style="info" %} Remember to switch to the branch `supabase` in the Shipped repository to leverage the Supabase code. {% endhint %} ## Sending emails for Supabase Authentication Supabase has recently changed their policies in terms of email sending, and in order to provent spam, they allow to send emails only to the member of the Supabase Organization Team ([check yours here](https://supabase.com/dashboard/org/_/team)) and it is intended to be used for testing purposes only. For production use, it requires you to configure a [custom SMTP](https://supabase.com/docs/guides/auth/auth-smtp). There are several services you can use to send emails. A non-exhaustive list of services that work with Supabase Auth is: * [Resend](https://resend.com/docs/send-with-supabase-smtp) * [AWS SES](https://docs.aws.amazon.com/ses/latest/dg/send-email-smtp.html) * [Postmark](https://postmarkapp.com/developer/user-guide/send-email-with-smtp) * [Twilio SendGrid](https://www.twilio.com/docs/sendgrid/for-developers/sending-email/getting-started-smtp) * [ZeptoMail](https://www.zoho.com/zeptomail/help/smtp-home.html) * [Brevo](https://help.brevo.com/hc/en-us/articles/7924908994450-Send-transactional-emails-using-Brevo-SMTP) **Resend** has a generous [free plan](https://resend.com/pricing), and a [detailed guide about how to integrate Supabase and Resend](https://resend.com/blog/how-to-configure-supabase-to-send-emails-from-your-domain) so I recommend you to get started with it. We have dedicated guides about the setup of Supabase Auth: * [Supabase Magic Link](/features/authentication/supabase-auth/supabase-magic-link.md) * [Supabase Email & Password](/features/authentication/supabase-auth/supabase-email-and-password.md) * [Supabase Authentication Flow](/features/authentication/supabase-auth/supabase-authentication-flow.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://docs.shipped.club/features/authentication/supabase-auth.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.