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Government · head to head

DataSF vs Mimecast

DataSF logo

DataSF

Government

San Francisco Open Data Portal

From
Free
Free plan
Yes
Full reviewWebsite
Mimecast logo

Mimecast

Cybersecurity

Email and collaboration security

From
$4/month
Free plan
No
Full reviewWebsite

The short version

  • Only DataSF has a free tier, so it costs nothing to try first.
  • They diverge on capability: DataSF covers Open Datasets, Mimecast covers Advanced threat detection.
  • Prices and features above were last checked on 30 August 2026.

Where they differ

Only the attributes on which DataSF and Mimecast actually diverge.

Attributes where DataSF and Mimecast differ
AttributeDataSFMimecast
Starting priceFree$4/month
Pricing modelfreesubscription
Free tierYesNo
PlatformsWebEmail, Cloud, Collaboration
CategoryGovernmentCybersecurity
Founded20092003

Identical on both: 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 DataSF

  • Open Datasets
  • Data API
  • Visualizations
  • Data Catalog
  • Automated Updates
  • Socrata
  • ArcGIS
  • Analysis 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.

DataSF

  • Citizen Servicesnot Mimecast
  • Records Managementnot Mimecast
  • Public Safetynot Mimecast
  • Civic Engagementnot Mimecast

Mimecast

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

Where each one falls short

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

DataSF

Nothing recorded yet. See the DataSF review.

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

DataSF

Free
  • Public AccessFree
    • Dataset Access
    • API Access
    • Visualizations

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 DataSF if

  • You need open datasets.
  • You want to start without paying.
  • You also want data api.
DataSF 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 DataSF or Mimecast better?
Neither clearly leads. DataSF 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, DataSF or Mimecast?
DataSF has a free tier; the other does not. Paid plans start at Free for DataSF and $4/month for Mimecast.
Does DataSF or Mimecast run on more platforms?
DataSF runs on Web. Mimecast runs on Email, Cloud, Collaboration.
Can I use DataSF for free?
Yes. DataSF has a free tier, so you can try it without paying. Mimecast starts at $4/month.
What is DataSF best used for?
DataSF is most often used for citizen services, records management, public safety, civic engagement. Of those, citizen services and records management are not what Mimecast is typically brought in for.
What can DataSF do that Mimecast cannot?
DataSF covers Open Datasets, Data API, Visualizations, Data Catalog. Mimecast covers Advanced threat detection, Secure sharing, Email encryption, Message tracking.

Answered from the vendors’ own pages

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
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
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