> ## Documentation Index
> Fetch the complete documentation index at: https://docs-staging-quickstart-revamp.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

> Describes the Auth0 built-in email services.

# Customize Emails

You can configure a test SMTP email server in your development or test environments to check for successful email delivery and view how emails you send appear to recipients prior to going to production. To learn more, read [Configure Test SMTP Email Server](/docs/customize/email/configure-test-smtp-email-servers).

Auth0's built-in email provider is **not supported for use in a production environment**, should only be used for testing, and has several restrictions:

* You will not be able to use any of the email customization features. The content of the emails sent for testing will be restricted to the format of the existing templates.
* All emails will be sent from a predefined **from address** (`no-reply@auth0user.net`).
* You will be restricted to sending no more than 10 emails per minute, regardless of email type.
* Your ability to send email from your tenant may be reduced (or even temporarily blocked) if your emails result in high bounce rates.

To remove these restrictions, you must set up your own email provider. Some options are:

* [Configure External SMTP Email Providers](/docs/customize/email/smtp-email-providers)
* [Configure Custom External SMTP Email Providers](/docs/customize/email/smtp-email-providers/configure-custom-external-smtp-email-provider)
* [Customize Email Handling](/docs/customize/email/manage-email-flow)

After you have configured your own email service provider, go to [Dashboard > Branding > Email Templates](https://manage.auth0.com/#/emails) to [customize your emails](/docs/customize/email/email-templates). If you have an Auth0 database connection, there are several email templates you can use as part of the authentication flow:

* Verification emails (using link or code)
* Welcome emails
* Enroll in <Tooltip tip="Multi-factor authentication (MFA): User authentication process that uses a factor in addition to username and password such as a code via SMS." cta="View Glossary" href="/docs/glossary?term=MFA">MFA</Tooltip> emails
* Change password emails
* Blocked account emails
* Password breach alert emails

You can restrict user signups to an application with user invitations as a provisioning workflow, either in conjunction with or as an alternative to self-provisioning. To learn more, read [Send Email Invitations for Application Signup](/docs/customize/email/send-email-invitations-for-application-signup).

A paid subscription plan is required for email customization. To learn more, read [Auth0 Pricing Page](https://auth0.com/pricing).

## Learn more

* [Customize Email Handling](/docs/customize/email/manage-email-flow)
* [Customize Email Templates](/docs/customize/email/email-templates)
* [Set Up Database Connections](/docs/get-started/applications/set-up-database-connections)
* [Configure External SMTP Email Providers](/docs/customize/email/smtp-email-providers)
* [Configure Test SMTP Email Server](/docs/customize/email/configure-test-smtp-email-servers)
* [Customize Blocked Account Emails](/docs/customize/email/customize-blocked-account-emails)