Who are GreatHorn's competitors?

CyberSentriq, ARM Research Labs, LLC, and Egress are among the closest in Email & Messaging Security. The full competitive set, with overlap scoring, is in the platform.

What products does GreatHorn sell?

GreatHorn sells GreatHorn Email Security and GreatHorn Mailbox Intelligence.

GreatHorn

Email & Messaging SecurityWaltham, United Statesfounded 2015acquired by SF2 GH Holdings

GreatHorn is a cybersecurity company specializing in Email & Messaging Security, founded in 2015 and headquartered in Waltham, United States. It has raised $21.93M in equity across 5 priced rounds, employs about 7 people, and was acquired by SF2 GH Holdings in 2022.

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updated Sep 27, 2026

GreatHorn Momentum score

26/ 100

Mandos Momentum blends hiring, funding, traffic and sentiment into one score out of 100. The score is free; the pillars behind it unlock in the platform.

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GreatHorn products

GreatHorn funding

GreatHorn has raised $21.93M in priced equity. Its most recent round was a Venture Round in February 2022.

Equity raised: $21.93M5 priced rounds
Last round: Venture RoundFeb 2022

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GreatHorn employees and hiring

GreatHorn has about 7 employees.

Employees: 7
Open roles: 0

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The other 440 data points.

Funding historyevery round, every investor named
Headcount growthvelocity, departments, seniority
Open jobslive postings, hiring pace, role mix
Tech stackframeworks, clouds, security

Similar in Email & Messaging Security

Common questions about GreatHorn.

How much funding has GreatHorn raised?: GreatHorn has raised $21.93M in priced equity. Its most recent round was a Venture Round in February 2022.
How many people work at GreatHorn?: GreatHorn has about 7 employees.
Who are GreatHorn's competitors?: CyberSentriq, ARM Research Labs, LLC, and Egress are among the closest in Email & Messaging Security. The full competitive set, with overlap scoring, is in the platform.
What does GreatHorn do?: GreatHorn is a cybersecurity company specializing in Email & Messaging Security, founded in 2015 and headquartered in Waltham, United States.
What products does GreatHorn sell?: GreatHorn sells GreatHorn Email Security and GreatHorn Mailbox Intelligence.