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Government · head to head

AWS GovCloud vs Mimecast

AWS GovCloud logo

AWS GovCloud

Government

Secure Cloud for Government

From
On request
Free plan
No
Full reviewWebsite
Mimecast logo

Mimecast

Cybersecurity

Email and collaboration security

From
$4/month
Free plan
No
Full reviewWebsite

The short version

  • Each has a real cost: AWS GovCloud access is restricted to vetted US entities, with account holders screened for US citizenship or permanent residency; Mimecast no pricing is published for any product or plan, and every route ends at a quote or demo request
  • They diverge on capability: AWS GovCloud covers FedRAMP High Authorized, Mimecast covers Advanced threat detection.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which AWS GovCloud and Mimecast actually diverge.

Attributes where AWS GovCloud and Mimecast differ
AttributeAWS GovCloudMimecast
Starting priceOn request$4/month
Pricing modelusage-basedsubscription
PlatformsWeb, Cli, SdkEmail, Cloud, Collaboration
CategoryGovernmentCybersecurity
Founded20062003

Identical on both: free tier (No), user rating (Not yet rated).

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 AWS GovCloud

  • FedRAMP High Authorized
  • ITAR Compliant
  • DOD SRG Levels
  • Isolated Infrastructure
  • Full AWS Services
  • Third-party Tools
  • Government Systems
  • Security Tools

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.

AWS GovCloud

  • Hosting controlled unclassified information for US federal agenciesnot Mimecast
  • Workloads requiring FedRAMP High, ITAR or DFARS compliancenot Mimecast
  • Defence and public sector systems needing US-person operationnot Mimecast
  • Regulated contractors handling government datanot Mimecast

Mimecast

  • Email security filtering against phishing and targeted attacksnot AWS GovCloud
  • Email archiving, continuity and compliance for organisationsnot AWS GovCloud

Where each one falls short

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

AWS GovCloud

  • Access is restricted to vetted US entities, with account holders screened for US citizenship or permanent residency
  • Separate IAM, console, CLI and APIs from commercial AWS, so accounts and tooling do not carry across
  • Not every AWS service is available in the two GovCloud regions
  • Pricing is not published on the product page

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

AWS GovCloud

On request
  • Pay-as-you-goFree
    • Compute
    • Storage
    • Database

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 AWS GovCloud if

  • You need fedramp high authorized.
  • You work on Web, Cli, Sdk.
  • You also want itar compliant.
AWS GovCloud 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 AWS GovCloud or Mimecast better?
Neither clearly leads. AWS GovCloud starts at On request and Mimecast at $4/month, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, AWS GovCloud or Mimecast?
AWS GovCloud starts at On request and Mimecast at $4/month.
Does AWS GovCloud or Mimecast run on more platforms?
AWS GovCloud runs on Web, Cli, Sdk. Mimecast runs on Email, Cloud, Collaboration.
What is AWS GovCloud best used for?
AWS GovCloud is most often used for hosting controlled unclassified information for us federal agencies, workloads requiring fedramp high, itar or dfars compliance, defence and public sector systems needing us-person operation, regulated contractors handling government data. Of those, hosting controlled unclassified information for us federal agencies and workloads requiring fedramp high, itar or dfars compliance are not what Mimecast is typically brought in for.
What can AWS GovCloud do that Mimecast cannot?
AWS GovCloud covers FedRAMP High Authorized, ITAR Compliant, DOD SRG Levels, Isolated Infrastructure. Mimecast covers Advanced threat detection, Secure sharing, Email encryption, Message tracking.

Answered from the vendors’ own pages

AWS GovCloud: Is AWS GovCloud pricing different from standard AWS?

The page does not disclose specific pricing for AWS GovCloud (US). It mentions 'AWS Savings Plans' as a flexible pricing model but provides no actual costs. Users must contact AWS directly via the 'Contact us' link or visit AWS pricing calculators for estimates.

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
AWS GovCloud: Who is eligible to use AWS GovCloud?

AWS GovCloud (US) is restricted to verified U.S. government agencies and entities meeting specific screening requirements. Commercial organizations and individual users cannot use this service.

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
AWS GovCloud: Can I try AWS GovCloud before committing to a contract?

The page does not disclose whether a free trial or evaluation period is available for AWS GovCloud. Pricing and trial information would need to be obtained by contacting AWS directly.

Source
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