Email security startups hiring now

Proofpoint

sunnyvale, US · Private Equity

Proofpoint provides a cybersecurity platform for organizations. It protects people, data and AI tools against threats and helps govern data use.

111 open roles44% remote

Abnormal

Las Vegas, US · Series D

Abnormal AI is an AI-native human behavior security platform that leverages machine learning to stop sophisticated inbound attacks and detect compromised accounts across email and connected applications. The platform learns the behavior of every identity in cloud email environment and analyzes the risk to protect organizations from email and collaboration application attacks.

74 open roles100% remote

Trellix

plano, US · Private Equity

Trellix provides cybersecurity software that connects threat intelligence and security controls. Organizations use its platform to detect, investigate and respond to attacks.

57 open roles76% remote

SonicWall

Milpitas, US · Post Ipo

SonicWall is an American cybersecurity company that sells a range of Internet appliances primarily directed at content control and network security. It provides network, content, web, and email security, remote access, and business continuity solutions.

47 open roles36% remote

AegisAI

US · Seed

Email security

25 open roles56% remote

Doppel

Covina, US · Series C

Doppel is an AI-native social engineering defense platform that uses agentic AI to protect executives, employees, customers, and brands from phishing, impersonation, fraud, and other AI-powered threats across digital channels.

21 open roles33% remote

Petra Security

San Francisco, US

Petra Security detects and stops business email compromise, token theft, and other M365 threats.

12 open roles33% remote

Virtru

Washington, US · Series D

Virtru offers end-to-end encryption and access control for emails, file sharing, and SaaS workflows. It secures messages and attachments within Gmail and Outlook via browser plugins, enabling features like revocation, expiration, watermarking, and downloadable restrictions.

9 open roles86% remote

Ocean

New York City, US · Series A

Ocean provides an agentic email security platform that uses AI agents to investigate every email in real time, analyzing behavior and intent to stop targeted phishing and AI-powered attacks.

4 open roles25% remote

Guardz

Miami, US · Series B

Guardz provides an AI-native Unified Detection and Response platform designed for MSPs to secure and insure small businesses. The platform protects critical assets including M365/Google Workspace identities, emails, endpoints, and cloud data.

4 open roles

Material Security

Redwood City, US · Series C

Material Security is an automated detection and response platform for Google Workspace and Microsoft 365, combining email security, data security, identity protection, and configuration management.

4 open roles100% remote

Mimecast

London, GB · Series D

Mimecast provides cloud-based email security, archiving, and continuity services that protect business data against spam, malware, phishing, and data leaks.

62 open roles24% remote