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Cybersecurity · head to head

Keeper Password Manager vs Mimecast

Keeper Password Manager logo

Keeper Password Manager

Cybersecurity

Cybersecurity starts here

From
Free
Rated
-
Full reviewWebsite
Mimecast logo

Mimecast

Cybersecurity

Email and collaboration security

From
$4/month
Rated
-
Full reviewWebsite

The short version

  • Only Keeper Password Manager has a free tier, so it costs nothing to try first.
  • Each has a real cost: Keeper Password Manager free tier limited to 10 passwords on one device only; Mimecast no pricing is published for any product or plan, and every route ends at a quote or demo request
  • They diverge on capability: Keeper Password Manager covers Zero-knowledge security, Mimecast covers Advanced threat detection.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which Keeper Password Manager and Mimecast actually diverge.

Attributes where Keeper Password Manager and Mimecast differ
AttributeKeeper Password ManagerMimecast
Starting priceFree$4/month
Pricing modelUnknownsubscription
Free tierYesNo
PlatformsWeb, iOS, Android, Windows, macOSEmail, Cloud, Collaboration
Founded20112003

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 Keeper Password Manager

  • Zero-knowledge security
  • Password vault
  • BreachWatch dark web monitoring
  • Secure file storage
  • One-time share
  • Emergency access
  • Passkey support
  • Secrets Manager

Only in Mimecast

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

Both cover

  • SOC2 Type 2
  • ISO 27001
  • GDPR

What people use each for

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

Keeper Password Manager

  • Password Managernot Mimecast
  • Secrets Managementnot Mimecast
  • Privileged Accessnot Mimecast

Mimecast

  • Email security filtering against phishing and targeted attacksnot Keeper Password Manager
  • Email archiving, continuity and compliance for organisationsnot Keeper Password Manager

Where each one falls short

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

Keeper Password Manager

  • Free tier limited to 10 passwords on one device only
  • Personal and Family plans lack team collaboration features
  • Higher per-user cost for small teams compared to some competitors

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

Keeper Password Manager

Free
  • Personal$34.99/year
  • Family$74.99/year
  • Business Starter$2/user per month
  • Business$3.75/user per month

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 Keeper Password Manager if

  • You need zero-knowledge security.
  • You want to start without paying.
  • You work on Web, iOS, Android, Windows, macOS.
  • You also want password vault.
Keeper Password Manager 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 Keeper Password Manager or Mimecast better?
Neither clearly leads. Keeper Password Manager starts at Free and Mimecast at $4/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Keeper Password Manager or Mimecast?
Keeper Password Manager has a free tier; the other does not. Paid plans start at Free for Keeper Password Manager and $4/month for Mimecast.
Does Keeper Password Manager or Mimecast run on more platforms?
Keeper Password Manager runs on Web, iOS, Android, Windows, macOS. Mimecast runs on Email, Cloud, Collaboration.
Can I use Keeper Password Manager for free?
Yes. Keeper Password Manager has a free tier, so you can try it without paying. Mimecast starts at $4/month.
What is Keeper Password Manager best used for?
Keeper Password Manager is most often used for password manager, secrets management, privileged access. Of those, password manager and secrets management are not what Mimecast is typically brought in for.
What can Keeper Password Manager do that Mimecast cannot?
Keeper Password Manager covers Zero-knowledge security, Password vault, BreachWatch dark web monitoring, Secure file storage. Mimecast covers Advanced threat detection, Secure sharing, Email encryption, Message tracking. Both handle SOC2 Type 2, ISO 27001, GDPR.

Answered from the vendors’ own pages

Keeper Password Manager: Does Keeper offer a free tier?

Keeper's free version stores only 10 passwords on a single mobile device with no cross-device sync and is effectively a trial.

Source
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
Keeper Password Manager: What does Keeper Business cost?

Keeper Business Starter costs $2 per user per month for 5-10 users. Keeper Business costs $3.75 per user per month for unlimited users.

Source
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
Keeper Password Manager: Does Keeper Enterprise include SSO?

Yes. Keeper Enterprise includes single sign-on capabilities along with compliance and reporting features at $6 per user per month.

Source
Keeper Password Manager: What security features does Keeper include?

Keeper uses zero-knowledge encryption where the company cannot access passwords, plus advanced features like privileged access management and session recording on Enterprise Plus.

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