Zix Corporation

What Zix Corporation does

Zix Corporation is a Dallas-based email security and compliance software company founded in 1988 (with a 1999 re-incorporation noted in some sources). It built its core franchise around policy-driven email encryption, data loss prevention (DLP), and mobile secure messaging, serving healthcare, financial services, and government organizations that require HIPAA, SEC, PCI DSS, FINRA, and GDPR compliance. In 2021, Zix was acquired by OpenText Corporation and now operates as a brand within OpenText's Cybersecurity portfolio; the standalone NASDAQ-listed entity (ticker ZIXI) no longer exists, and legacy support and Secure Cloud portals have been retained while marketing has been consolidated onto OpenText Cybersecurity's site.

Name

Zix Corporation

Legal name

Zix Corporation

Website

https://zix.com

Company type

Public

Founded year

1999

Operating status

Acquired

Headcount range

51–100 employees

Short description

Zix Corporation provides email encryption, threat protection, and compliance archiving for SMB and mid-market customers, distributed primarily through MSP and VAR channel partners. Acquired by OpenText in 2021, the products now operate within OpenText's Cybersecurity portfolio.

Ownership category

akta.pro rank

Product category

Email Security

NAICS

Software Publishers (5132), Custom Computer Programming Services (541511)

SIC

Services-Computer Programming, Data Processing, Etc. (7370)

akta.pro primary industry

Software-Defined Perimeter (SDP) / Zero Trust Network Access (ZTNA) (HDADABAC)

akta.pro secondary industries

Access Management & Policy Enforcement (Authorization, ZTNA integration) (HDAEAJAG), Network Security Services (Firewall/VPN/ZTNA/SASE Integration) (BPAEAEAG)

Keywords

• Email encryption
• Email threat protection
• Data loss prevention
• Compliance archiving
• Secure messaging

Headquarters

HQ city

Dallas

HQ country

United States

HQ region

North America

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Marketing or Sales, Operations, Infrastructure

Revenue model

1. Email Encryption Subscription: Per-user subscription model with monthly, annual, and multi-year subscription options. Subscription fee includes support and maintenance. Revenue from software-as-a-service delivery of email encryption, threat protection, and archiving services.
2. Email Message Privacy Licensing: Professional users consume licenses; guest recipients are free. SaaS-based delivery with no infrastructure needed.

Pricing tiers

Go-to-market motion2 records

Distribution channels6 records

Marketing channels8 records

Core offering

Zix Corporation provides cloud-based email security software, including policy-based email encryption, email threat protection against phishing and BEC, secure file sharing, and compliance archiving delivered via the Secure Cloud platform. Following its 2021 acquisition by OpenText, the Zix product suite is sold primarily through the OpenText Cybersecurity portfolio to businesses in healthcare, financial services, government, and other regulated verticals.

Product overview

Zix Corporation, now part of OpenText Cybersecurity, offers a comprehensive cybersecurity portfolio organized around five core product categories: Email Security (including Email Encryption, Email Threat Protection, Email Continuity, and Email Message Privacy), Endpoint Security (Endpoint Protection, EDR, MDR, DNS Protection), Data Backup and Recovery (Server Backup, Endpoint Backup), Continuity and Compliance (Availability, Recover, Migrate, Mailstore Email Archiving, Business Communication Archive), and SaaS Backup (Microsoft 365, Google Workspace, Salesforce, Box, Dropbox). The products are managed through the Secure Cloud platform, which provides centralized management, API integrations with MSP tools (Kaseya, Autotask, ConnectWise, HaloPSA), and bundled solutions for MSPs serving SMB customers. The Email Security products form the core offering, with encryption and threat protection capabilities powered by AI for anomaly detection and process automation.

Differentiator

Problem solved

Functional benefit

Brands

• Core Email Encryption: Email encryption solution for secure business communications with DLP policy enforcement.
• Core Email Threat Protection
• Core Email Message Privacy
• Secure Cloud
• Core Business Communication Archive

Products and services

• Email Encryption Policy-based email encryption for outbound business communications, using the proprietary Best Method of Delivery engine to automatically select S/MIME, TLS, or a secure messaging portal for each recipient, with DLP policy enforcement for sensitive content.
• Email Threat Protection Email threat protection against phishing, ransomware, business email compromise (BEC), and impersonation attacks, with high-efficacy filtering, link rewriting at click, attachment quarantine with sandbox analysis, internal mail filtering, and post-delivery message retraction for Microsoft 365.
• Email Continuity Email continuity service that allows users to send and receive emails during primary email service outages, ensuring uninterrupted business communications.
• Email Message Privacy Secure file and message sharing with full access control, digital rights management for view/reply/forward restrictions, large file transfers up to 100GB, e-signature support, and full tracking transparency for compliance.
• Security Awareness Training Training solution designed to educate employees about cybersecurity threats and best practices to reduce human-driven email security risk.
• OpenText Core Business Communication Archive Cloud-native archiving and eDiscovery platform that captures emails, chat, social media, and collaboration data into a compliant archive, with WORM-compliant immutable storage supporting over 50 communication sources and compliance with HIPAA, SEC, PCI DSS, FINRA, and GDPR.
• Secure Cloud Centralized cloud management platform for MSPs and SMBs providing account management, license provisioning, security insights, threat response, and API and PSA integrations with Kaseya, Autotask, ConnectWise, and HaloPSA.

Quantifiable outcome

• 25-30% improvement in threat detection for MSP partners using MDR
• +2 more outcomes

Named customers5 records

Segments7 records

Ideal customer profiles5 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration9 records

AI capability4 records

Feature8 records

Partnerships

One partnership is on record.

• MicrosoftcoreTechnology or IntegrationZix products are deeply integrated with Microsoft 365, Azure, and Modern Work solutions. OpenText offers bundled Microsoft 365 with Email Threat Protection, manages Microsoft 365 licenses, and provides migration services. OpenText is a Microsoft Cloud Solution Provider (CSP) partner with sales and technical bootcamps for M365 Copilot, Modern Work, and Azure.

Scale indicators4 records

Recent moves7 records

Expansion highlights5 records

Direct peers

• Proofpoint: Leading pure-play in email security, threat protection, DLP, and archiving for enterprise and mid-market. Direct overlap with Zix's Email Threat Protection, encryption, and archiving products across the same regulated verticals.
• Mimecast: Email security, archiving, and continuity suite competing head-to-head with Zix in financial services, healthcare, and the SMB/mid-market served through MSPs. Closest 1:1 competitor on product breadth.
• Barracuda Networks: Email security gateway, archiving, and Microsoft 365 backup — directly overlapping with Zix's email threat protection and SaaS backup modules, and similarly distributed via MSPs.

Broad incumbents

• Microsoft Defender for Office 365: Native Microsoft email security bundle within M365 E3/E5 SKUs. Largest competitive force in the category and the platform Zix layers onto via its CSP relationship.
• Trend Micro Email Security: Broader cybersecurity platform with a strong email security module competing against Zix in mid-market and enterprise, bundled with Trend's endpoint and cloud security offerings.
• Cisco Secure Email: Enterprise-grade email security gateway (IronPort heritage) competing in larger enterprise accounts with integrated networking/security buying motion.

Emerging players

• Abnormal Security: AI-native email security platform focused on BEC, account takeover, and social engineering — overlapping with Zix's Email Threat Protection and increasingly a disruptive force in the same buyer conversation.
• IRONSCALES: AI-driven email phishing and BEC protection focused on mid-market and enterprises using Microsoft 365 — direct overlap with Zix's AI-powered threat protection feature set.
• Virtru: Email and file encryption specialist built on the open TDF standard — narrower scope than Zix but directly comparable on the encryption/DLP workflow layer for Google Workspace and M365 customers.
• KnowBe4: Security awareness training and phishing simulation — directly overlaps with Zix's Security Awareness Training add-on and is increasingly bundled into the same MSP-led procurement decisions.

Market position

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

• Xx.com/ZixCorp
• YouTubeyoutube.com/user/ZixCorpVideo
• LinkedInlinkedin.com/company/zix

Revenue estimate

Valuation estimate

Number of profiles

Funding overview

Funding rounds1 record

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A8 records

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Zix Corporation