CISO Tribune

Vendor comparison · 2 companies

IRONSCALES vs Mimecast

IRONSCALES sells email security that protects Microsoft 365 and Google Workspace against business email compromise, account takeover, malware and malicious URLs, credential harvesting, generative AI attacks, QR code and image-based phishing, and deepfake impersonation in Microsoft Teams meetings. Mimecast describes the problem it addresses as human risk. CISO Tribune files both under Email 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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  • IRONSCALES
  • Mimecast
IRONSCALES vs Mimecast: Products, Customers and Funding Compared
IRONSCALESIRONSCALES sells email security that protects Microsoft 365 and Google Workspace against business email compromise, account takeover, malware and malicious URLs, credential harvesting, generative AI attacks, QR code and image-based phishing, and deepfake impersonation in Microsoft Teams meetings.ironscales.comMimecastMimecast describes the problem it addresses as human risk.mimecast.com
What it sells
  • Phishing SOC Agent[6][10]Delivers L2-level forensics on suspicious email.
  • Phishing Simulation Agent[6][10]Builds phishing simulations from OSINT gathered on employees.
  • Human Risk Management[11]Phishing simulation, security awareness training, and user risk scoring.
  • Themis[2][9]An agentic AI virtual SOC that classifies, clusters, and remediates threats.
  • Email Incident Management Service (EIMS)[12]IRONSCALES experts handle email threat investigation, remediation, and AI tuning.
  • Managed Threat Response[8]24x7 analyst response to every user-reported email.
Categories
Headquarters
Atlanta, United States[1][13]London, United Kingdom[1]
Founded
2014[1][13]2003[1][6]
Ownership and funding
Privately held[4][8]Owned by Permira since 2022[3][4][8][13][14][19]
Named customers
Not stated on its pagesNot stated on its pages
Recent news
Not stated on its pages
  • June 25, 2026Mimecast appointed Ranjan Singh as its Chief Executive Officer.[12]
G2 and Gartner Peer Insights
  • G2: listed, seen October 25, 2026[8]
  • Gartner Peer Insights: Not stated on its pages
Who it fits
From its own pages, the company sells mainly to enterprises and to MSPs and MSSPs. One entry point addresses global companies that are transforming their email security to tackle modern threats. The site also presents a comparison of secure email gateways and API-based solutions for enterprises and MSPs.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.
Last verified
November 2, 2026September 27, 2026

Where they overlap

  • Email security is the primary category of both IRONSCALES and Mimecast.

Where they differ, field by field

  • IRONSCALES is also filed under AI SOC analysts. Mimecast is also filed under Email authentication and DMARC, Collaboration app security and Insider risk management.
  • IRONSCALES lists Phishing SOC Agent, Phishing Simulation Agent, Human Risk Management, Themis and Email Incident Management Service (EIMS). Mimecast lists Managed Threat Response.
  • IRONSCALES is headquartered in Atlanta, United States. Mimecast is headquartered in London, United Kingdom.
  • IRONSCALES was founded in 2014. Mimecast was founded in 2003.
  • IRONSCALES is privately held. Mimecast is owned by Permira, since 2022.

How they differ

CISO Tribune files IRONSCALES under Email security and AI SOC analysts, and files Mimecast under Email security, Email authentication and DMARC, Collaboration app security, and Insider risk management. IRONSCALES sells email security for Microsoft 365 and Google Workspace, connected through a native API integration with no MX record changes. Mimecast describes the problem it addresses as human risk, and its products span email, chat and file-sharing. They include Managed Threat Response for user-reported email, Incydr for insider risk, Engage for security behavior management, and Cloud Archive.

Both companies handle user-reported email and both cover human risk training, but they package the work differently. IRONSCALES offers Themis to act on reported and detected threats, plus an Email Incident Management Service in which its experts handle investigation, remediation, and AI tuning. Mimecast offers Managed Threat Response, in which analysts investigate, classify and remediate each reported email 24x7.

IRONSCALES is headquartered in Atlanta, Georgia, and Tel Aviv, Israel, was founded in 2014, and is privately held. Its funding includes a Series C of $64 million led by PSG, bringing total financing to $80 million since 2015. It serves organizations directly and through more than 3,500 MSP partners. Mimecast is headquartered in London, United Kingdom, was founded in 2003, and has been owned by Permira since 2022. Mimecast says it protects and supports 42,000+ organizations and offers 300+ integrations. On June 25, 2026, Mimecast appointed a new Chief Executive Officer.

What it sells: IRONSCALES

What Phishing SOC Agent does[6][10]
Phishing SOC Agent delivers L2-level forensics in minutes and runs five analysis tracks in parallel: sender verification, body analysis for social engineering, link inspection through the full redirect chain, attachment detonation across 100+ engines, and relay path tracing. The agent's output is a Security Assessment with a verdict, key evidence, and a full activity log of every step it took.
What Phishing Simulation Agent does[6][10]
Phishing Simulation Agent gathers OSINT on people, including social media profiles, data breach exposure, and recent job changes, and builds simulations that mirror the tactics targeting the organization. Personalized phishing emails are written in each employee's native language, and one sample per employee cluster is approved by the customer.
What Human Risk Management does[11]
The platform incorporates Human Risk Management: phishing simulation, security awareness training, and user risk scoring modules that automatically tailor simulations to each employee's specific threat profile. IRONSCALES offers a GPT-powered spear phishing module for VIPs and frequently targeted employees.
What Themis does[2][9]
Themis is described as an agentic AI virtual SOC that automatically classifies, clusters, and remediates threats detected by machine learning models or user-reported emails. When a threat is detected, Themis takes autonomous action: quarantining, clustering, or escalating based on automation preferences.

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.

Questions about IRONSCALES and Mimecast

What do IRONSCALES and Mimecast sell?
IRONSCALES sells Phishing SOC Agent, Phishing Simulation Agent, Human Risk Management, Themis and Email Incident Management Service (EIMS). Mimecast sells Managed Threat Response.
Are IRONSCALES and Mimecast in the same category?
Yes. Email security is the primary category of both on CISO Tribune.
Where are IRONSCALES and Mimecast headquartered?
IRONSCALES is headquartered in Atlanta, United States. Mimecast is headquartered in London, United Kingdom.
When were IRONSCALES and Mimecast founded?
IRONSCALES was founded in 2014. Mimecast was founded in 2003.
Who owns IRONSCALES and Mimecast?
IRONSCALES is privately held. Mimecast is owned by Permira, since 2022.
Who are IRONSCALES and Mimecast sold to?
From its own pages, the company sells mainly to enterprises and to MSPs and MSSPs. 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 IRONSCALES and Mimecast announced recently?
June 25, 2026: Mimecast appointed Ranjan Singh as its Chief Executive Officer.

About IRONSCALES

IRONSCALES sells email security that protects Microsoft 365 and Google Workspace against business email compromise, account takeover, malware and malicious URLs, credential harvesting, generative AI attacks, QR code and image-based phishing, and deepfake impersonation in Microsoft Teams meetings. IRONSCALES connects to Microsoft 365 or Google Workspace through a native API integration, with no MX record changes, no agents, and no mail flow disruption. IRONSCALES can be added behind an existing secure email gateway, and the gateway can be retired later.[7]

Adaptive AI builds a behavioral baseline and social graph using NLP and NLU, learning how users normally communicate. Adaptive AI provides real-time reputation, content, and behavioral analysis to detect malicious threats. Adaptive AI works at the mailbox level and sees internal and external traffic. IRONSCALES combines Adaptive AI with human insight from 36,000+ threat hunters across 18,000+ organizations, so an attack confirmed in one organization is blocked for the rest.[2][7]

Themis is described as an agentic AI virtual SOC that automatically classifies, clusters, and remediates threats detected by machine learning models or user-reported emails. When a threat is detected, Themis takes autonomous action: quarantining, clustering, or escalating based on automation preferences. IRONSCALES automates threat classification, incident clustering, quarantine actions, user notifications, and enrichment with threat intelligence. Admins can configure workflows from alert-only to fully automated remediation and end-user notification. When a user clicks the Report Phishing button, IRONSCALES scans the message, clusters it with similar emails, and evaluates it using Adaptive AI and community insights. The platform integrates with SIEM, SOAR, XDR, and EDR systems to support incident response workflows.[2][9]

Red Teaming Agent runs the same OSINT reconnaissance attackers run, pulling from social media, press releases, job postings, and vendor relationships. Red Teaming Agent generates attack simulations from what it finds. Phishing SOC Agent delivers L2-level forensics in minutes and runs five analysis tracks in parallel: sender verification, body analysis for social engineering, link inspection through the full redirect chain, attachment detonation across 100+ engines, and relay path tracing. Phishing Simulation Agent gathers OSINT on people, including social media profiles, data breach exposure, and recent job changes, and builds simulations that mirror the tactics targeting the organization.[6][10]

The platform incorporates Human Risk Management: phishing simulation, security awareness training, and user risk scoring modules that automatically tailor simulations to each employee's specific threat profile. IRONSCALES offers a GPT-powered spear phishing module for VIPs and frequently targeted employees. IRONSCALES experts handle email threat investigation, remediation, and AI tuning on the customer's behalf.[2][11][12]

Deepfake Protection analyzes voice independently of video, so it catches impersonation even when cameras are off. Protected identity profiles build automatically from normal meeting activity, with no manual uploads and no IT involvement. Outbound email encryption is elective or policy-based, with AES-256 encryption in transit and at rest. Hosted DMARC, SPF, and DKIM come with automated policy enforcement, SPF record flattening, and continuous monitoring with detailed authentication reports. Account takeover protection detects unauthorized access attempts to Microsoft user accounts to prevent data breaches, internal BEC attacks, and ransomware.[10][12]

IRONSCALES was founded in 2014 by alumni of the Israel Defense Forces' Intelligence Technology unit. IRONSCALES is headquartered in Atlanta, Georgia, and Tel Aviv, Israel. Series B funding of $8 million was led by Jump Capital, bringing total financing to $16 million since 2015. Series C funding of $64 million was led by PSG, bringing total financing to $80 million since 2015. Organizations worldwide are served both directly and through a network of more than 3,500 managed service provider (MSP) partners. For schools, the AI trains on actual attacks that target K-12 and higher education environments.[2][3][5][6][7][10][12][14][15][16]

IRONSCALES on the record

Sources

IRONSCALES full record

  1. [1]About usIRONSCALES · ironscales.com · undated page, accessed September 27, 2026 · Tier A
  2. [2]Platform | How It WorksIRONSCALES · undated page, accessed September 27, 2026 · Tier A
  3. [3]Ironscales raises series c funding roundIRONSCALES · ironscales.com · published December 7, 2021 · Tier A
  4. [4]Ironscales ipoForge Global · forgeglobal.com · undated page, accessed September 27, 2026 · Tier C
  5. [5]AI Email Security Platform for Phishing & Deepfakes | IronscalesIRONSCALES · undated page, accessed October 25, 2026 · Tier A
  6. [6]Email Security AgentsIRONSCALES · undated page, accessed October 25, 2026 · Tier A
  7. [7]IRONSCALES | Complete Email Security & Training SolutionsIRONSCALES · undated page, accessed October 25, 2026 · Tier A
  8. [8]IRONSCALES Reviews 2026: Details, Pricing, & Features - G2G2 · undated page, accessed October 25, 2026 · Tier C
  9. [9]SOC Automation SolutionIRONSCALES · undated page, accessed November 10, 2026 · Tier A
  10. [10]Platform | What's NewIRONSCALES · undated page, accessed November 10, 2026 · Tier A
  11. [11]Platform | Human ElementIRONSCALES · undated page, accessed November 10, 2026 · Tier A
  12. [12]Pricing | IronscalesIRONSCALES · undated page, accessed November 10, 2026 · Tier A
  13. [13]IRONSCALES | About Us | Our StoryIRONSCALES · undated page, accessed November 10, 2026 · Tier A
  14. [14]Education Email Security Solutions | IRONSCALESIRONSCALES · undated page, accessed November 10, 2026 · Tier A
  15. [15]Augment your Secure Email Gateway with IRONSCALESIRONSCALES · undated page, accessed November 10, 2026 · Tier A
  16. [16]DMARC Management and MonitoringIRONSCALES · undated page, accessed November 10, 2026 · Tier A

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

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