Auth0 B2C Essentials: EU tenants, email providers, Actions and security-event reconciliation

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Hello Auth0 Community,

I’m evaluating Auth0 B2C Essentials for a small Ireland-based educational application. We’re preparing an invitation-only beta for 3–5 adult teachers and would like to clarify the technical capabilities before subscribing.

Our proposed configuration uses Auth0 Universal Login with EU-region tenants, an external transactional email provider and a separate application-managed session system.

I’d appreciate clarification on the following:

1. B2C Essentials tenant allocation

  • Does one Essentials subscription include three tenants, allowing separate EU development and beta environments?

  • Are MAU, machine-to-machine (M2M) allowances and other limits shared across tenants or allocated separately?

  • Do additional charges apply to these tenants?

2. Email verification and password resets

  • Does Essentials support external Amazon SES and native Resend integrations for verification and password-reset emails?

  • Are email templates and verification/reset workflows included, or do they require additional entitlements?

3. Actions and identity changes

  • Which Actions triggers are available for password changes and resets?

  • What execution, retry and outbound-call limits apply?

  • What supported mechanisms exist for detecting blocked, unblocked or deleted users?

4. Security-event reconciliation

This is particularly important for our application.

We need to ensure that a password reset, account block or deletion can invalidate our own application sessions.

  • Which Management APIs, logs or event streams are available on Essentials?

  • Can they provide a complete current user snapshot, including deletions, after an outage?

  • What are the pagination, event-ordering, retention, replay and rate-limit limitations?

  • Are there documented gaps that would prevent complete reconciliation?

5. EU processing and documentation

Are there specific regional limitations or additional processing considerations for EU tenants using external email providers?

Links to official documentation would be greatly appreciated, especially where features differ between Free and Essentials.

We understand that community replies are technical guidance rather than contractual commitments. We’re not requesting account changes or activation.

Thank you for your help!