
Mimecast
Global cybersecurity company specializing in email security and human risk management.
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About
Mimecast offers advanced email security and human risk management solutions, leveraging AI to defend against sophisticated cyber threats and protect critical data. Their platform addresses insider risks, enhances data governance, and drives security behavior change for organizations. Mimecast serves over 42,000 customers with its comprehensive suite of security and compliance tools.
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Public companies
Mimecast and Proofpoint both offer secure email gateway solutions with advanced threat protection, including URL defense and attachment sandboxing, competing for enterprise and mid-market email security budgets.
Competing product: Proofpoint Email Protection
Fortinet's FortiMail competes with Mimecast in providing multi-layered email security, including anti-spam, antivirus, and data leak prevention, for organizations of various sizes.
Competing product: FortiMail
Cisco Secure Email Threat Defense offers URL filtering, spam prevention, malware detection, and AI-driven threat detection, directly competing with Mimecast's email security offerings, especially for companies already within the Cisco ecosy
Competing product: Cisco Secure Email Threat Defense
Sophos Email provides an MDR-optimized email security solution that combines various security tools to monitor and detect evolving threats, positioning it as a direct competitor to Mimecast's email security services.
Competing product: Sophos Email
KnowBe4 is a leader in security awareness training, offering extensive content and compliance coverage, which directly competes with Mimecast's security behavior management and awareness training solutions.
Competing product: Security Awareness Training
Key facts
- Website
- mimecast.com
- Headquarters
- London, United Kingdom
- Founded
- 2003
- Employees
- 2,441
- Total funding
- $239M (Series E)
- Business model
- B2B
Funding rounds
| Date | Round | Amount | Post-money | Lead investors |
|---|---|---|---|---|
| 1 Mar 2024 | Series E | $150M | $1.5B | Insight Partners, Dawn Capital |
| 1 Oct 2017 | Post-IPO Equity | $403K | ||
| 26 Sept 2012 | Series C | $62M | Insight Partners | |
| 25 Jan 2010 | Series B | $21M | ||
| 1 Sept 2008 | Series A | $3M | ||
| 1 Aug 2008 | Seed | $2M |
Tech stack
Detected on mimecast.com, last scanned 20 Oct 2026. Run your own scan
- Frontend
- Bootstrap
- Backend
- ASP.NET
- Analytics
- Google Tag Manager
- Hosting
- Azure
- Email provider
- Mimecast
- Email marketing
- Adobe Marketo
- Status page
- Status.io
- Hiring platform
- Happydance
- Affiliate program
- Self-hosted affiliate
Mimecast scores 91. Does yours?
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Frequently asked
Is Mimecast trustworthy and reputable?
StartupHub's Data Trust & Reputation score for Mimecast is 92 out of 100, a trusted rating, based on site security posture, privacy practices, malware and phishing checks, and public reputation signals.
How much funding has Mimecast raised?
Mimecast has raised a total of $239M in funding. The most recent round on record is Series E.
How many employees does Mimecast have?
Mimecast has approximately 2,441 people on record.
Does Mimecast have an affiliate program?
Yes, Mimecast has an affiliate program. The program runs on Self-hosted affiliate. Register here: www.mimecast.com/affiliates
Commercial Legal Services
Industrial Manufacturing
Higher Education
Insurance Services
Healthcare Services
Enterprise Infrastructure & Services
Confirmed customers of Mimecast.
Public record
SEC filings, insider activity, nonprofit links and pay benchmarks for Mimecast

