Cybersecurity · head to head
Mimecast vs Transmit Security
Transmit Security
Cybersecurity
Customer identity platform built around passwordless and fraud signals
- From
- On request
- Rated
- -
The short version
- Each has a real cost: Mimecast no pricing is published for any product or plan, and every route ends at a quote or demo request; Transmit Security pricing is not published, so it cannot be compared early against competitors that post per monthly active user rates, and the eventual quote often mixes per-user and per-transaction units.
- They diverge on capability: Mimecast covers Advanced threat detection, Transmit Security covers Passwordless authentication.
- Prices and features above were last checked on 1 September 2026.
Where they differ
Only the attributes on which Mimecast and Transmit Security actually diverge.
| Attribute | Mimecast | Transmit Security |
|---|---|---|
| Starting price | $4/month | On request |
| Pricing model | subscription | quote |
| Platforms | Email, Cloud, Collaboration | Web, iOS, Android |
| Founded | 2003 | Unknown |
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 Mimecast
- Advanced threat detection
- Secure sharing
- Email encryption
- Message tracking
- Email archiving
- Legal hold
- eDiscovery
- Backup and recovery
Only in Transmit Security
- Passwordless authentication
- Detection and response
- Identity verification
- Orchestration
- Account recovery
- Bot and automation detection
- Composable APIs
What people use each for
The jobs each tool is most often brought in to do.
Mimecast
- Email security filtering against phishing and targeted attacksnot Transmit Security
- Email archiving, continuity and compliance for organisationsnot Transmit Security
Transmit Security
- A bank moving a consumer base off passwords to passkeys without losing customers at the migration stepnot Mimecast
- An insurer whose account recovery flow is the main account takeover route and needs risk scoring inside itnot Mimecast
- A retailer that wants bot detection at login rather than only at checkoutnot Mimecast
- An organisation replacing an in-house customer login system that has become an unfunded engineering liabilitynot Mimecast
Where each one falls short
Documented limitations, not opinions. Every one is a constraint you would hit in normal use.
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
Transmit Security
- Pricing is not published, so it cannot be compared early against competitors that post per monthly active user rates, and the eventual quote often mixes per-user and per-transaction units.
- Migrating a live consumer identity base is a high risk project, and credential migration constraints mean some users must re-register, which shows up as measurable churn.
- The vendor is smaller than the identity incumbents, so the partner and systems integrator pool is thinner and staffing a large programme is harder.
- Workforce identity is not the focus, so an organisation wanting one vendor for employees and customers will still run two platforms.
- The fraud detection value depends on traffic volume feeding the models, so a smaller deployment gets less benefit from exactly the capability that justified choosing it over a plain identity provider.
Pricing, plan by plan
Mimecast
$4/month- Defender$4/month
- Per user
- Threat protection
- Impersonation prevention
- Archive$3/month
- Email archiving
- Legal hold
- Search & recall
- Unified$6/month
- All Defender features
- All Archive features
- Backup
Transmit Security
On request- Transmit Security Platform$undefined/year
- Priced per monthly active user or per transaction by service
- Services licensed individually or as a platform
- Free developer tier for evaluation
Which should you pick?
Choose Mimecast if
- You need advanced threat detection.
- You work on Email, Cloud, Collaboration.
- You also want secure sharing.
Choose Transmit Security if
- You need passwordless authentication.
- You work on Web, iOS, Android.
- You also want detection and response.
Questions people ask
- Is Mimecast or Transmit Security better?
- Neither clearly leads. Mimecast starts at $4/month and Transmit Security at On request, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
- Which is cheaper, Mimecast or Transmit Security?
- Mimecast starts at $4/month and Transmit Security at On request.
- Does Mimecast or Transmit Security run on more platforms?
- Mimecast runs on Email, Cloud, Collaboration. Transmit Security runs on Web, iOS, Android.
- What is Mimecast best used for?
- Mimecast is most often used for email security filtering against phishing and targeted attacks, email archiving, continuity and compliance for organisations. Of those, email security filtering against phishing and targeted attacks and email archiving, continuity and compliance for organisations are not what Transmit Security is typically brought in for.
- What can Mimecast do that Transmit Security cannot?
- Mimecast covers Advanced threat detection, Secure sharing, Email encryption, Message tracking. Transmit Security covers Passwordless authentication, Detection and response, Identity verification, Orchestration.
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.
SourceTransmit Security: Do we have to replace our existing identity provider?
No. The services are composable, so detection and response or verification can be adopted alongside an existing provider such as Okta or Entra ID.
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.
SourceTransmit Security: Is fraud detection an extra licence?
It is a separate service, but it is designed to run inside the authentication flow rather than as a bolted-on second vendor. Confirm which services are in your quote.
Transmit Security: Is there a way to try it?
Yes, a free developer tier exists for evaluation, though production use is an enterprise agreement.
Related pages
More on Transmit Security
Other head to heads
- Mimecast vs Norton 360
- Mimecast vs 1Password
- Mimecast vs Bitdefender Total Security
- Mimecast vs LastPass
- Mimecast vs Proofpoint
- Mimecast vs Nessus
- Mimecast vs Qualys VMDR
- Mimecast vs Doppler
- Mimecast vs Chainguard
- Mimecast vs Microsoft Defender for Endpoint
- Mimecast vs Netwrix
- Mimecast vs Trend Micro Vision One
- Mimecast vs TrustArc
- Mimecast vs Varonis Data Security Platform
- Mimecast vs VMware Carbon Black
- Mimecast vs Wireshark
- Mimecast vs WorkOS
- Mimecast vs Descope
- Mimecast vs NICE Actimize
- Mimecast vs Beyond Identity
- Mimecast vs Sardine
- Mimecast vs Feedzai
- Mimecast vs Socure
- Mimecast vs Unit21
- Mimecast vs Entrust Identity as a Service
- Mimecast vs Featurespace ARIC Risk Hub
- Mimecast vs Ping Identity
- Mimecast vs Stytch
- Mimecast vs Rhombus Systems
- Mimecast vs Semgrep
- Mimecast vs Spot AI
- Mimecast vs Syft
- Mimecast vs ThetaRay
- Mimecast vs Trivy
- Mimecast vs Trulioo
- Transmit Security vs Norton 360
- Transmit Security vs 1Password
- Transmit Security vs Bitdefender Total Security
- Transmit Security vs LastPass
- Transmit Security vs Proofpoint
- Transmit Security vs Nessus
- Transmit Security vs Qualys VMDR
- Transmit Security vs Doppler
- Transmit Security vs Chainguard
- Transmit Security vs Microsoft Defender for Endpoint
- Transmit Security vs Netwrix
- Transmit Security vs Trend Micro Vision One
- Transmit Security vs TrustArc
- Transmit Security vs Varonis Data Security Platform
- Transmit Security vs VMware Carbon Black
- Transmit Security vs Wireshark
- Transmit Security vs WorkOS
- Transmit Security vs Descope
- Transmit Security vs NICE Actimize
- Transmit Security vs Beyond Identity
- Transmit Security vs Sardine
- Transmit Security vs Feedzai
- Transmit Security vs Socure
- Transmit Security vs Unit21
- Transmit Security vs Entrust Identity as a Service
- Transmit Security vs Featurespace ARIC Risk Hub
- Transmit Security vs Ping Identity
- Transmit Security vs Stytch
- Transmit Security vs Rhombus Systems
- Transmit Security vs Semgrep
- Transmit Security vs Spot AI
- Transmit Security vs Syft
- Transmit Security vs ThetaRay
- Transmit Security vs Trivy
- Transmit Security vs Trulioo