StealthMail
Track on RadarStealthMail secures business email via encrypted, private-network message transfer.
- Total raised
- $2.7M
- Employees
- 6
- Founded
- 2017
- Momentum
- 26
Stalling
Data updated August 2026
About
About StealthMail
At a glance
StealthMail is a cybersecurity company specializing in Email & Messaging Security, founded in 2017 and headquartered in London, United Kingdom. It has raised $2.7M in total funding, employs about 6 people, and is privately held.
StealthMail is a secure email communication company that developed a proprietary encrypted messaging solution designed for business use. Rather than routing messages through the public internet, StealthMail uses a different message transfer model that keeps emails encrypted at all times within the customer's own infrastructure. Encryption keys are not stored on third-party servers but remain under the control of the organization using the solution. The company was founded by a team with a background in secure professional telecommunications, claiming over 12 years of experience building secure and mission-critical solutions for clients in the United States, Europe, and the Middle East. StealthMail holds a patent on a technology called the Secure Dynamic Network Protocol, which it describes as military-grade encrypted communication. StealthMail's solution is deployed as a cloud instance within the customer's own environment, meaning it does not require changes to existing IT infrastructure. The platform is designed to protect against common email-based attack vectors such as spear phishing, business email compromise (BEC), email account compromise (EAC), and man-in-the-middle attacks. The company is a member of the Microsoft One Commercial Partner program with co-sell eligibility, indicating integration or compatibility with Microsoft's ecosystem. StealthMail targets enterprises and their IT security leadership, emphasizing protection of business communications without reliance on external or shared infrastructure. The company also produces educational content, including a book titled "The Art of Email Security," aimed at raising awareness about email security risks among both technical and non-technical audiences.
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Privately held
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FAQ
Frequently asked questions about StealthMail
When was StealthMail founded?▾
StealthMail was founded in 2017.
Where is StealthMail headquartered?▾
StealthMail is headquartered in London, United Kingdom.
How much funding has StealthMail raised?▾
StealthMail has raised a total of $2.7M in total funding.
Is StealthMail public or private?▾
StealthMail is a privately-held company.
How many employees does StealthMail have?▾
StealthMail has approximately 6 employees.