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Top 19 Email Security startups
Sep 12, 2025 | By Fernando Lopez | 11 |
These startups want to disrupt Email Security with AI-powered phishing detection, machine learning-based spam filtering and encrypted end-to-end communication.
1
Country: USA | Funding: $13M
AegisAI is a next-generation email security technology that uses self-driving AI agents to analyse each email like a human analyst would.
AegisAI is a next-generation email security technology that uses self-driving AI agents to analyse each email like a human analyst would.
2
Country: USA | Funding: $885.5M
Proofpoint provides cloud-based email security, e-discovery, and compliance solutions for companies to protect sensitive business data.
Proofpoint provides cloud-based email security, e-discovery, and compliance solutions for companies to protect sensitive business data.
3
Country: USA | Funding: $534M
Abnormal Security is an email security company that protects enterprises and organizations from targeted email attacks.
Abnormal Security is an email security company that protects enterprises and organizations from targeted email attacks.
4
Country: USA | Funding: $500М
Check Point Software Technologies provides and protects customers from cyberattacks.
Check Point Software Technologies provides and protects customers from cyberattacks.
5
Country: USA | Funding: $260.5M
Menlo Security is a cyber security company that protects organizations from malware.
Menlo Security is a cyber security company that protects organizations from malware.
6
Country: UK | Funding: $132.6M
Tessian creates a Human Layer Security that helps people work without security disruptions getting in the way.
Tessian creates a Human Layer Security that helps people work without security disruptions getting in the way.
7
Country: USA | Funding: $121M
The leading enterprise cloud email security platform combining AI and human insights protecting 10,000 global customers.
The leading enterprise cloud email security platform combining AI and human insights protecting 10,000 global customers.
8
Country: UK | Funding: $90.2M
Mimecast is a SaaS-based email management platform enabling companies to administer business communications and data.
Mimecast is a SaaS-based email management platform enabling companies to administer business communications and data.
9
Country: USA | Funding: $89.8M
Sublime Security is an open, adaptable email security system.
Sublime Security is an open, adaptable email security system.
10
Country: USA | Funding: $89M
Fortinet is a provider of network security appliances that include firewalls, security gateways, and complementary products.
Fortinet is a provider of network security appliances that include firewalls, security gateways, and complementary products.
11
Country: USA | Funding: $58M
Cofense provides phishing threat management for organizations concerned about human susceptibility.
Cofense provides phishing threat management for organizations concerned about human susceptibility.
12
Country: UK | Funding: $47.4M
Egress is a software company that specializes in human layer security designed to prevent accidental and intentional data breaches.
Egress is a software company that specializes in human layer security designed to prevent accidental and intentional data breaches.
13
Country: USA | Funding: $46.4M
Barracuda is a provider of powerful, easy-to-use, affordable IT solutions for security and storage.
Barracuda is a provider of powerful, easy-to-use, affordable IT solutions for security and storage.
14
Country: USA | Funding: $41.4M
Avanan uses AI to protect cloud email and collaboration suites from cyber attacks.
Avanan uses AI to protect cloud email and collaboration suites from cyber attacks.
15
Country: USA | Funding: $40.5M
SlashNext is a computer and network security company that specializes in cybersecurity, cyber-attack detection, and IT solutions.
SlashNext is a computer and network security company that specializes in cybersecurity, cyber-attack detection, and IT solutions.
16
Country: Israel | Funding: $38M
A Prevention-as-a-Service company, offering fast interception of any content-based attack across all channels
A Prevention-as-a-Service company, offering fast interception of any content-based attack across all channels
17
Country: Armenia | Funding: $22.3M
EasyDMARC is an All-In-1 solution for securing client's domain and email infrastructure.
EasyDMARC is an All-In-1 solution for securing client's domain and email infrastructure.
18
Country: Ireland
TitanHQ provides high quality, reasonably priced network security products SpamTitan, WebTitan & ArcTitan.
TitanHQ provides high quality, reasonably priced network security products SpamTitan, WebTitan & ArcTitan.
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