# OpenText Email Security vs Sendmarc DMARC Managed Services: side-by-side comparison (2026) [OpenText Email Security](https://cybersectools.com/tools/opentext-email-security) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [OpenText Cybersecurity](https://cybersectools.com/companies/opentext-cybersecurity). [Sendmarc DMARC Managed Services](https://cybersectools.com/tools/sendmarc-dmarc-managed-services) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [Sendmarc](https://cybersectools.com/companies/sendmarc). Features, integrations, deployment and the company behind each one, side by side. Need the answer fast? [Best Email Security Solutions for Business](https://cybersectools.com/shortlists/best-email-security-platforms) picks Proofpoint Core Email Protection, Microsoft Defender for Office 365, Mimecast Advanced Email Security and 4 more. ## Side-by-side comparison | | OpenText Email Security | Sendmarc DMARC Managed Services | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Email Security Platforms | Email Security Platforms | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | Company | OpenText Cybersecurity | Sendmarc | | Headquarters | – | – | ### Use cases and capabilities | | OpenText Email Security | Sendmarc DMARC Managed Services | |---|---|---| | Ransomware | Yes | – | | DMARC | – | Yes | | SPF | – | Yes | | DKIM | – | Yes | | Multi Tenancy | – | Yes | | Spoofing | – | Yes | ### Core features **OpenText Email Security** 10 features listed. Sign in on the page to see them. **Sendmarc DMARC Managed Services** 10 features listed. Sign in on the page to see them. ### Integrations **OpenText Email Security** No integrations listed. **Sendmarc DMARC Managed Services** 2 integrations listed. Sign in on the page to see them. ## OpenText Email Security vs Sendmarc DMARC Managed Services FAQ Common questions when comparing OpenText Email Security vs Sendmarc DMARC Managed Services for email security platforms. ### What is the difference between OpenText Email Security and Sendmarc DMARC Managed Services? **OpenText Email Security**: Comprehensive email security platform protecting inbound/outbound communications. Built by OpenText Cybersecurity. **Sendmarc DMARC Managed Services**: MSP-focused multi-tenant DMARC management platform for email auth at scale. Built by Sendmarc. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes OpenText Email Security and Sendmarc DMARC Managed Services? **OpenText Email Security** is made by OpenText Cybersecurity. **Sendmarc DMARC Managed Services** is made by Sendmarc. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is OpenText Email Security a good alternative to Sendmarc DMARC Managed Services? Often, yes. OpenText Email Security and Sendmarc DMARC Managed Services are both Email Security Platforms products. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [OpenText Email Security vs Ironscales DMARC Management](https://cybersectools.com/compare/ironscales-dmarc-management-vs-opentext-email-security) - [OpenText Email Security vs Sendmarc DMARC Management Platform](https://cybersectools.com/compare/opentext-email-security-vs-sendmarc-dmarc-management-platform) - [OpenText Email Security vs InboxSeguro](https://cybersectools.com/compare/inboxseguro-vs-opentext-email-security) - [Sendmarc DMARC Managed Services vs Ironscales DMARC Management](https://cybersectools.com/compare/ironscales-dmarc-management-vs-sendmarc-dmarc-managed-services) - [Sendmarc DMARC Managed Services vs Sendmarc DMARC Management Platform](https://cybersectools.com/compare/sendmarc-dmarc-managed-services-vs-sendmarc-dmarc-management-platform) - [Sendmarc DMARC Managed Services vs InboxSeguro](https://cybersectools.com/compare/inboxseguro-vs-sendmarc-dmarc-managed-services) ## Alternatives to each - [See all OpenText Email Security alternatives](https://cybersectools.com/alternatives/opentext-email-security) - [See all Sendmarc DMARC Managed Services alternatives](https://cybersectools.com/alternatives/sendmarc-dmarc-managed-services) --- Source: https://cybersectools.com/compare/opentext-email-security-vs-sendmarc-dmarc-managed-services For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/opentext-email-security.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on OpenText Email Security and Sendmarc DMARC Managed Services: funding, momentum, hiring and news, plus the full product and company record, are available through the Mandos MCP Server (paid plans), which connects to AI assistants: https://mandos.io/mcp?utm_source=cybersectools.com&utm_medium=compare-md