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Cybersecurity · head to head

Entrust Identity as a Service vs Tuta

Entrust Identity as a Service logo

Entrust Identity as a Service

Cybersecurity

Workforce and customer authentication from a certificate authority

From
$2/month
Rated
-
Full reviewWebsite
Tuta logo

Tuta

Cybersecurity

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

From
Free
Rated
-
Full reviewWebsite

The short version

  • Only Tuta has a free tier, so it costs nothing to try first.
  • Each has a real cost: Entrust Identity as a Service the application integration catalogue is smaller than that of the dedicated identity vendors, so uncommon SaaS applications more often need custom SAML configuration rather than a template.; Tuta individual plan pricing only shown in EUR; no USD conversion provided on site
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Entrust Identity as a Service and Tuta actually diverge.

Attributes where Entrust Identity as a Service and Tuta differ
AttributeEntrust Identity as a ServiceTuta
Starting price$2/monthFree
Pricing modelPer user per monthfreemium
Free tierNoYes
PlatformsWeb, iOS, Android, Windows, LinuxWeb

Identical on both: user rating (Not yet rated), category (Cybersecurity).

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 Entrust Identity as a Service

  • Multi-factor authentication
  • Single sign-on
  • Adaptive authentication
  • Passwordless login
  • Credential lifecycle
  • Derived PIV credentials
  • Directory integration

Only in Tuta

Nothing recorded that Entrust Identity as a Service does not also cover.

What people use each for

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

Entrust Identity as a Service

  • A government agency needing derived mobile credentials from an existing PIV smart card estatenot Tuta
  • A bank that must support hardware tokens for corporate treasury users alongside push authentication for staffnot Tuta
  • An organisation already buying Entrust certificates that wants credential issuance and authentication from one vendornot Tuta
  • A defence supplier required to use certificate-based authentication that mainstream cloud identity products handle poorlynot Tuta

Tuta

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

Where each one falls short

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

Entrust Identity as a Service

  • The application integration catalogue is smaller than that of the dedicated identity vendors, so uncommon SaaS applications more often need custom SAML configuration rather than a template.
  • Developer experience for customer identity use cases is behind the specialists, and teams building consumer signup flows will find the APIs and documentation less complete.
  • Advanced capabilities including adaptive authentication and credential management sit above the published entry price, so the two dollar figure rarely reflects what a regulated buyer actually spends.
  • There are two overlapping products, Identity as a Service and Identity Enterprise, and choosing wrongly at the start means a migration later rather than a licence change.
  • Identity governance, access certification and privileged access are not covered, so an organisation with audit-driven access review requirements needs a second vendor alongside it.

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

Entrust Identity as a Service

$2/month
  • Workforce Standard$2/month
    • Multi-factor authentication
    • Single sign-on
    • Directory integration
  • Higher tiers$undefined/month
    • Adaptive risk-based authentication
    • Certificate and smart card credential management
    • Derived PIV credentials

Tuta

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

Which should you pick?

Choose Entrust Identity as a Service if

  • You need multi-factor authentication.
  • You work on Web, iOS, Android, Windows, Linux.
  • You also want single sign-on.
Entrust Identity as a Service review

Choose Tuta if

  • You want to start without paying.
Tuta review

Questions people ask

Is Entrust Identity as a Service or Tuta better?
Neither clearly leads. Entrust Identity as a Service starts at $2/month and Tuta at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Entrust Identity as a Service or Tuta?
Tuta has a free tier; the other does not. Paid plans start at $2/month for Entrust Identity as a Service and Free for Tuta.
Does Entrust Identity as a Service or Tuta run on more platforms?
Entrust Identity as a Service runs on Web, iOS, Android, Windows, Linux. Tuta runs on Web.
Can I use Tuta for free?
Yes. Tuta has a free tier, so you can try it without paying. Entrust Identity as a Service starts at $2/month.
What is Entrust Identity as a Service best used for?
Entrust Identity as a Service is most often used for a government agency needing derived mobile credentials from an existing piv smart card estate, a bank that must support hardware tokens for corporate treasury users alongside push authentication for staff, an organisation already buying entrust certificates that wants credential issuance and authentication from one vendor, a defence supplier required to use certificate-based authentication that mainstream cloud identity products handle poorly. Of those, a government agency needing derived mobile credentials from an existing piv smart card estate and a bank that must support hardware tokens for corporate treasury users alongside push authentication for staff are not what Tuta is typically brought in for.
What can Entrust Identity as a Service do that Tuta cannot?
Entrust Identity as a Service covers Multi-factor authentication, Single sign-on, Adaptive authentication, Passwordless login.

Answered from the vendors’ own pages

Entrust Identity as a Service: Is MFA included or extra?

Multi-factor authentication is included in the workforce bundles rather than sold separately, which is not true of every competitor. Adaptive risk-based authentication sits in higher tiers.

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
Entrust Identity as a Service: Does it do identity governance?

No. Access certification, role mining and joiner-mover-leaver governance require a separate product such as SailPoint or Saviynt.

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
Entrust Identity as a Service: Why choose this over Okta or Entra ID?

Almost always because of PKI, smart cards or derived credentials. Without that requirement the mainstream platforms are the stronger general purpose choice.

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
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