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Cybersecurity · head to head

Auth0 vs Tuta

Auth0 logo

Auth0

Cybersecurity

Secure access for everyone

From
Free
Free plan
Yes
Visit Auth0Full review
Tuta logo

Tuta

Cybersecurity

Secure, green and ad-free. Email to feel good about.

From
Free
Free plan
Yes
Visit TutaFull review

The short version

  • Auth0 is an identity platform for builders.
  • Free plans on both; paid from $35/mo and €3/mo.
  • Where Auth0 falls short: free tier limited to 25,000 monthly active users, requiring upgrade for growth beyond that.
  • Where Tuta falls short: individual plan pricing only shown in EUR; no USD conversion provided on site.
  • Prices and features on this page were last checked on 13 November 2026.

Where they differ

Only the attributes on which Auth0 and Tuta actually diverge.

Attributes where Auth0 and Tuta differ
AttributeAuth0Tuta
PlatformsWeb, iOS, AndroidWeb

Identical on both: starting price (Free), free tier (Yes), category (Cybersecurity).

Not yet recorded: pricing model for Auth0, founded for Tuta.

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Auth0

  • Universal login
  • Social login
  • Multi-factor authentication
  • Passwordless
  • User management
  • Anomaly detection
  • Extensibility
  • Machine to machine

Only in Tuta

Nothing recorded that Auth0 does not also cover.

What people use each for

The jobs each tool is most often brought in to do.

Auth0

  • B2C authenticationnot Tuta
  • B2B authenticationnot Tuta
  • B2E authenticationnot Tuta
  • API securitynot Tuta
  • Mobile app securitynot Tuta

Tuta

  • Private encrypted email communicationnot Auth0
  • Users valuing end-to-end encryption and zero-knowledge architecturenot Auth0
  • Individuals seeking open-source email clientsnot Auth0
  • Organizations requiring quantum-resistant encryptionnot Auth0

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Auth0

  • Free tier limited to 25,000 monthly active users, requiring upgrade for growth beyond that
  • Advanced features like MFA and RBAC only available on paid Essentials tier and above
  • Ownership by Okta introduces risk that independent product roadmap may change

Tuta

  • Individual plan pricing only shown in EUR; no USD conversion provided on site
  • Family plan pricing separate (EUR 3 or EUR 8 per additional user) not included in main pricing
  • Shared mailboxes require additional EUR 3-8 monthly charges

Pricing, plan by plan

Auth0

Free
  • FreeFree
    • Up to 25,000 monthly active users
    • Basic authentication
    • Email/password login
  • Essentials (B2C)$35/mo
    • Unlimited MAUs beyond free tier
    • Multi-Factor Authentication
    • Role-Based Access Control
  • Professional (B2C)$240/mo
    • All Essentials features
    • Advanced security
    • Custom branding

Tuta

Free
  • Free PlanFree
    • 1 GB storage
    • 1 calendar
    • 3 labels
  • Revolutionary Plan€3/mo
    • 20 GB storage
    • 15 email aliases
    • 3 custom domains
  • Legend Plan€8/mo
    • 500 GB storage
    • 30 email aliases
    • 10 custom domains

Which should you pick?

Choose Auth0 if

  • You need universal login.
  • You want to start without paying.
  • You work on Web, iOS, Android.
  • You also want social login.
Auth0 review

Choose Tuta if

  • You want to start without paying.
Tuta review

Questions people ask

Is Auth0 or Tuta better?
Neither clearly leads. Auth0 starts at Free and Tuta at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Auth0 or Tuta?
Auth0 starts at Free and Tuta at Free.
Does Auth0 or Tuta run on more platforms?
Auth0 runs on Web, iOS, Android. Tuta runs on Web.
Can I use Auth0 for free?
Both have a free tier, so you can try either at no cost before committing.
What is Auth0 best used for?
Auth0 is most often used for b2c authentication, b2b authentication, b2e authentication, api security. Of those, b2c authentication and b2b authentication are not what Tuta is typically brought in for.
What can Auth0 do that Tuta cannot?
Auth0 covers Universal login, Social login, Multi-factor authentication, Passwordless.

Answered from the vendors’ own pages

Auth0: How much does Auth0 cost?

Auth0 has a Free tier for up to 25,000 monthly active users (MAUs). Paid plans start at $35/month (Essentials B2C) and scale to $240/month (Professional B2C) and higher for Enterprise. Pricing scales with MAU usage.

Source
Tuta: How much does Tuta email cost?

Tuta offers a free plan with 1 GB storage. Paid plans are EUR 3/month (Revolutionary) with 20 GB storage and 15 email aliases, and EUR 8/month (Legend) with 500 GB storage and 30 email aliases. Family plan add-ons cost EUR 3-8 per additional mailbox member monthly.

Source
Auth0: Does Auth0 include Multi-Factor Authentication?

No. MFA, RBAC (Role-Based Access Control), and premium support are not included in the free tier and require upgrading to paid Essentials plans or higher.

Source
Tuta: Is there a free email plan with Tuta?

Yes, Tuta's free plan includes 1 GB of storage, one calendar, three labels, and full end-to-end encryption security features with no custom domains or email aliases.

Source
Auth0: Is Auth0 independent or part of a larger company?

Auth0 was acquired by Okta in May 2021 for $6.5 billion. It now operates as a subsidiary business unit within Okta, but maintains its own brand and operations.

Source
Tuta: What are the limits on Tuta's free email plan?

The free plan provides 1 GB storage, access to one calendar, three labels maximum, and no support for custom domains or additional email aliases.

Source
Auth0: Who should use Auth0 vs Okta?

Auth0 is developer-focused and serves customer identity use cases (B2C). Okta serves workforce identity (B2B) and has broader enterprise features. Auth0 now serves both markets post-acquisition but maintains its developer-friendly positioning.

Source
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