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Cybersecurity · head to head

Entrust Identity as a Service vs Mimecast

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
Mimecast logo

Mimecast

Cybersecurity

Email and collaboration security

From
$4/month
Rated
-
Full reviewWebsite

The short version

  • 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.; Mimecast no pricing is published for any product or plan, and every route ends at a quote or demo request
  • They diverge on capability: Entrust Identity as a Service covers Multi-factor authentication, Mimecast covers Advanced threat detection.
  • 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 Mimecast actually diverge.

Attributes where Entrust Identity as a Service and Mimecast differ
AttributeEntrust Identity as a ServiceMimecast
Starting price$2/month$4/month
Pricing modelPer user per monthsubscription
PlatformsWeb, iOS, Android, Windows, LinuxEmail, Cloud, Collaboration
FoundedUnknown2003

Identical on both: free tier (No), 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 Mimecast

  • Advanced threat detection
  • Secure sharing
  • Email encryption
  • Message tracking
  • Email archiving
  • Legal hold
  • eDiscovery
  • Backup and recovery

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 Mimecast
  • A bank that must support hardware tokens for corporate treasury users alongside push authentication for staffnot Mimecast
  • An organisation already buying Entrust certificates that wants credential issuance and authentication from one vendornot Mimecast
  • A defence supplier required to use certificate-based authentication that mainstream cloud identity products handle poorlynot Mimecast

Mimecast

  • Email security filtering against phishing and targeted attacksnot Entrust Identity as a Service
  • Email archiving, continuity and compliance for organisationsnot 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.

Mimecast

  • No pricing is published for any product or plan, and every route ends at a quote or demo request
  • The platform is split into separately sold products for email security, awareness training, data protection and governance
  • Collaboration threat protection, DMARC analysis, incident response and email archiving are all further add ons on top of those

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

Mimecast

$4/month
  • Defender$4/month
    • Per user
    • Threat protection
    • Impersonation prevention
  • Archive$3/month
    • Email archiving
    • Legal hold
    • Search & recall
  • Unified$6/month
    • All Defender features
    • All Archive features
    • Backup

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 Mimecast if

  • You need advanced threat detection.
  • You work on Email, Cloud, Collaboration.
  • You also want secure sharing.
Mimecast review

Questions people ask

Is Entrust Identity as a Service or Mimecast better?
Neither clearly leads. Entrust Identity as a Service starts at $2/month and Mimecast at $4/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Entrust Identity as a Service or Mimecast?
Entrust Identity as a Service starts at $2/month and Mimecast at $4/month.
Does Entrust Identity as a Service or Mimecast run on more platforms?
Entrust Identity as a Service runs on Web, iOS, Android, Windows, Linux. Mimecast runs on Email, Cloud, Collaboration.
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 Mimecast is typically brought in for.
What can Entrust Identity as a Service do that Mimecast cannot?
Entrust Identity as a Service covers Multi-factor authentication, Single sign-on, Adaptive authentication, Passwordless login. Mimecast covers Advanced threat detection, Secure sharing, Email encryption, Message tracking.

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.

Mimecast: How much does Mimecast cost?

Mimecast does not publish pricing on its website. Customers must request a custom quote by contacting the sales team at +1 617 393 7000 or using the Get a Quote button.

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.

Mimecast: Is there a free trial of Mimecast?

Mimecast's trial and pricing options are not specified on the public website. Contact sales at +1 617 393 7000 or through their support portal at mimecastsupport.zendesk.com for trial availability.

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.

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