CISO Tribune

Vendor comparison · 2 companies

Mimecast vs Trustifi

Mimecast describes the problem it addresses as human risk. Trustifi sells a platform that uses AI, behavioral analysis and threat intelligence to detect phishing, business email compromise and malicious content across email, Teams, OneDrive and SharePoint. CISO Tribune files both under Email security and Collaboration app security. This page sets the two records side by side: what each sells, where it is based, who owns and funds it, the customers it names and its recent news, each fact numbered to its source.

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Up to four companies side by side.

  • Mimecast
  • Trustifi
Mimecast vs Trustifi: Products, Customers and Funding Compared
MimecastMimecast describes the problem it addresses as human risk.mimecast.comTrustifiTrustifi sells a platform that uses AI, behavioral analysis and threat intelligence to detect phishing, business email compromise and malicious content across email, Teams, OneDrive and SharePoint.trustifi.com
What it sells
  • Managed Threat Response[8]24x7 analyst response to every user-reported email.
  • Outbound Shield[2][3][9]Scans and encrypts outgoing email according to administrators' policies.
  • Account Takeover Protection[2][5][11]Monitors and reports suspicious user email behavior using AI engines.
  • Email Security Awareness Training[12]Email security awareness training platform for staff.
Categories
Headquarters
London, United Kingdom[1]Not stated on its pages
Founded
2003[1][6]Not stated on its pages
Ownership and funding
Owned by Permira since 2022[3][4][8][13][14][19]Privately held[1][4]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
  • June 25, 2026Mimecast appointed Ranjan Singh as its Chief Executive Officer.[12]
Not stated on its pages
G2 and Gartner Peer Insights
  • G2: listed, seen November 3, 2026[4]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From its own pages, Mimecast sells mainly to organizations that want to reduce risk caused by human actions across email, chat and file-sharing. Its pages say its plans are designed for businesses of all sizes, and its customer stories cover both small and medium businesses and enterprises. Mimecast says Incydr offers FedRAMP-authorized solutions suited to government agencies and contractors. It describes Cloud Archive as helping IT, Legal, Compliance and HR teams respond to legal inquiries or compliance audits. Its pages also point to security teams that handle user-reported email and insider risk.Not written yet
Last verified
September 27, 2026September 27, 2026

Where they overlap

  • Email security is the primary category of both Mimecast and Trustifi; both are also filed under Collaboration app security.

Where they differ, field by field

  • Mimecast is also filed under Email authentication and DMARC and Insider risk management. Trustifi is also filed under Data loss prevention and Security awareness training.
  • Mimecast lists Managed Threat Response. Trustifi lists Outbound Shield, Account Takeover Protection and Email Security Awareness Training.
  • Mimecast is headquartered in London, United Kingdom.
  • Mimecast was founded in 2003.
  • Mimecast is owned by Permira, since 2022. Trustifi is privately held.

How they differ

CISO Tribune files both Mimecast and Trustifi under Email security as the primary category, and both also appear under Collaboration app security. Mimecast is also filed under Email authentication and DMARC and Insider risk management, while Trustifi is also filed under Data loss prevention and Security awareness training. Mimecast describes the problem it addresses as human risk, and it says it protects across email, chat and file-sharing. Trustifi describes a cloud-based email filter that uses AI to scan inbound emails and block threats.

Mimecast sells Managed Threat Response, in which analysts investigate, classify and remediate each email that users report. It also sells Incydr for insider risk, Engage for security behavior management, and Cloud Archive for collaboration data. Trustifi sells Outbound Shield, which scans and encrypts outgoing email according to administrators' policies. It also sells Account Takeover Protection, which monitors and reports suspicious user email behavior, and an email security awareness training platform. Trustifi says its collaboration security covers Teams, OneDrive and SharePoint.

Mimecast is headquartered in London, United Kingdom, was founded in 2003, and has been owned by Permira since 2022. It says it protects and supports 42,000+ organizations globally and offers 300+ integrations. On June 25, 2026, Mimecast appointed a new Chief Executive Officer. Trustifi is privately held.

What it sells: Mimecast

What Managed Threat Response does[8]
Mimecast Managed Threat Response has analysts investigate, classify and remediate each email users report. It works with the existing report button.

What it sells: Trustifi

What Outbound Shield does[2][3][9]
Outbound Shield automatically scans and encrypts outgoing email messages according to administrators' policies. Emails that contain sensitive information are automatically secured.
What Account Takeover Protection does[2][5][11]
Account takeover protection monitors and reports suspicious company user email behavior, using AI engines. It employs machine learning to profile typical login behavior. Security account administrators are notified automatically when compromised access to a user login account is detected.

Questions about Mimecast and Trustifi

What do Mimecast and Trustifi sell?
Mimecast sells Managed Threat Response. Trustifi sells Outbound Shield, Account Takeover Protection and Email Security Awareness Training.
Are Mimecast and Trustifi in the same category?
Yes. Email security is the primary category of both on CISO Tribune.
Where are Mimecast and Trustifi headquartered?
Mimecast is headquartered in London, United Kingdom.
When were Mimecast and Trustifi founded?
Mimecast was founded in 2003.
Who owns Mimecast and Trustifi?
Mimecast is owned by Permira, since 2022. Trustifi is privately held.
Who are Mimecast and Trustifi sold to?
From its own pages, Mimecast sells mainly to organizations that want to reduce risk caused by human actions across email, chat and file-sharing.
What have Mimecast and Trustifi announced recently?
June 25, 2026: Mimecast appointed Ranjan Singh as its Chief Executive Officer.

About Mimecast

Mimecast describes the problem it addresses as human risk. Its solutions page says Mimecast offers a unified and dynamic solution to rapidly identify and reduce risk caused by human actions and to empower users to make smarter security decisions. Mimecast says a unified platform with integrated protection across email, chat and file-sharing is essential to safeguard an organization's collaboration.[2][5][15]

For email and collaboration threat protection, Mimecast says its solution blocks phishing, BEC, impersonation, malware and collaboration-based attacks using adaptive AI across email, Teams, Slack and more.[2][11][16]

Mimecast Managed Threat Response is a managed service for emails that users report. Mimecast says each report is analyst-investigated, classified and remediated 24x7. Mimecast says the service works with the existing report button and that API outputs route to a SIEM, SOAR or case management platform.

For insider risk, Mimecast Incydr is the data protection product. Mimecast says Incydr brings email, endpoint, cloud, browser and agentic risk surfaces into one view, scored for risk and tied back to people. Mimecast says Incydr offers adaptive controls that range from in-the-moment education to allow-with-justification to targeted blocking. The Agent Risk Center, part of Mimecast Incydr, discovers the agents operating in an environment, classifies their AI activity against the customer's rules, and applies controls to reduce data exposure. Mimecast says Incydr offers data residency options and FedRAMP-authorized solutions, and that an ultra-lightweight agent supports Windows, Mac and Linux.[2][9][18]

For security behavior management, Mimecast Engage delivers behavior-driven interventions powered by the Human Risk Command Center. Mimecast says Engage can deliver nudges via email, Slack or Teams, and that it offers 200+ training modules available in 27 languages. Mimecast says Engage connects with security tools such as CrowdStrike, Okta and Netskope.[2][7]

For archiving, Mimecast Cloud Archive provides self-service tools to collect, discover, preserve and review collaboration data. Mimecast says Supervision supports review, escalation, export and reporting, Sync & Recover protects files, folders, contacts, tasks and notes, and Archive for MS Teams keeps encrypted copies of Teams data.[9]

Mimecast says it protects and supports 42,000+ organizations globally and has done so since 2003. Its pages say it offers 300+ integrations.[2][9][10][11][17][18]

Mimecast on the record

Sources

Mimecast full record

  1. [1]CompanyMimecast · mimecast.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]ProductsMimecast · mimecast.com · undated page, accessed September 27, 2026 · Tier A
  3. [3]Permira completes acquisition of mimecastPermira · permira.com · published May 17, 2022 · Tier A
  4. [4]Human Risk Management & Advanced Email Security | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
  5. [5]Advanced Email Security | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
  6. [6]Mimecast Incydr | See & Stop Data Loss From Insiders | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
  7. [7]Security Awareness Training | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
  8. [8]Email Incident Response Service | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
  9. [9]Email Archive | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
  10. [10]Aware | Keep Collaboration Secure & Compliant | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
  11. [11]Cybersecurity Products and Services | MimecastMimecast · undated page, accessed October 26, 2026 · Tier A
  12. [12]Mimecast Appoints Ranjan Singh as Chief Executive OfficerGlobeNewswire · published June 25, 2026 · Tier A
  13. [13]Mimecast Advanced Email Security Reviews & Product Details - G2G2 · undated page, accessed October 26, 2026 · Tier C
  14. [14]Mimecast Reviews, Ratings & Features 2026 | Gartner Peer InsightsGartner Peer Insights · undated page, accessed October 26, 2026 · Tier C
  15. [15]Cyber Security Solutions | MimecastMimecast · undated page, accessed November 4, 2026 · Tier A
  16. [16]Email & Collaboration Threat Protection | MimecastMimecast · undated page, accessed November 4, 2026 · Tier A
  17. [17]Collaboration Threat Protection | MimecastMimecast · undated page, accessed November 4, 2026 · Tier A
  18. [18]Mimecast Plans | MimecastMimecast · undated page, accessed November 4, 2026 · Tier A
  19. [19]Mimecast Reviews, Ratings & Features 2026 | Gartner Peer InsightsGartner Peer Insights · undated page, accessed November 4, 2026 · Tier C

Trustifi full record

  1. [1]Trustifi raises 25m series a to scale ai email security platform 302471421Trustifi via PR Newswire · prnewswire.com · published June 3, 2025 · Tier A
  2. [2]ProductsTrustifi · trustifi.com · published September 15, 2026 · Tier A
  3. [3]Integrations · Trustifi DocumentationTrustifi · undated page, accessed October 29, 2026 · Tier A
  4. [4]Trustifi Email Security Reviews & Product DetailsG2 · undated page, accessed October 29, 2026 · Tier C
  5. [5]Trustifi | Better Security for Email and Microsoft Office 365Trustifi · undated page, accessed November 3, 2026 · Tier A
  6. [6]Email Anti Spoofing | Security SoftwareTrustifi · undated page, accessed November 3, 2026 · Tier A
  7. [7]Email Security Services for Companies | AI-Powered Solutions | TrustifiTrustifi · undated page, accessed November 3, 2026 · Tier A
  8. [8]Products and Features | TrustifiTrustifi · undated page, accessed November 3, 2026 · Tier A
  9. [9]Outbound Email Security | TrustifiTrustifi · undated page, accessed November 3, 2026 · Tier A
  10. [10]Collaboration Shield | TrustifiTrustifi · undated page, accessed November 3, 2026 · Tier A
  11. [11]Account Takeover Protection | Compromised Account DetectionTrustifi · undated page, accessed November 3, 2026 · Tier A
  12. [12]Email Security Awareness Training | TrustifiTrustifi · undated page, accessed November 3, 2026 · Tier A
  13. [13]Advanced Cloud Email Archiving | TrustifiTrustifi · undated page, accessed November 3, 2026 · Tier A

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