# Sendmarc DMARC Managed Services vs Shieldlink AI Attack Simulation: side-by-side comparison (2026) [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). [Shieldlink AI Attack Simulation](https://cybersectools.com/tools/shieldlink-ai-attack-simulation) is a commercial [phishing simulation](https://cybersectools.com/categories/phishing-simulation) solution by [Shieldlink](https://cybersectools.com/companies/shieldlink). 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 | | Sendmarc DMARC Managed Services | Shieldlink AI Attack Simulation | |---|---|---| | Pricing model | Commercial | Commercial | | Category | Email Security Platforms | Phishing Simulation | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise | | Company | Sendmarc | Shieldlink | | Headquarters | – | – | ### Use cases and capabilities | | Sendmarc DMARC Managed Services | Shieldlink AI Attack Simulation | |---|---|---| | DMARC | Yes | – | | SPF | Yes | – | | DKIM | Yes | – | | Multi Tenancy | Yes | – | | Spoofing | Yes | – | | Deepfake Detection | – | Yes | | Social Engineering | – | Yes | | Generative AI | – | Yes | | Education | – | Yes | | Fraud Detection | – | Yes | ### Core features **Sendmarc DMARC Managed Services** 10 features listed. Sign in on the page to see them. **Shieldlink AI Attack Simulation** 5 features listed. Sign in on the page to see them. ### Integrations **Sendmarc DMARC Managed Services** 2 integrations listed. Sign in on the page to see them. **Shieldlink AI Attack Simulation** No integrations listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [Shieldlink AI Attack Simulation](https://cybersectools.com/tools/shieldlink-ai-attack-simulation) fits if you are a startup. ## Sendmarc DMARC Managed Services vs Shieldlink AI Attack Simulation FAQ Common questions when comparing Sendmarc DMARC Managed Services vs Shieldlink AI Attack Simulation for email security platforms. ### What is the difference between Sendmarc DMARC Managed Services and Shieldlink AI Attack Simulation? **Sendmarc DMARC Managed Services**: MSP-focused multi-tenant DMARC management platform for email auth at scale. Built by Sendmarc. **Shieldlink AI Attack Simulation**: AI-generated multi-channel phishing, vishing, and deepfake attack simulations. Built by Shieldlink. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Sendmarc DMARC Managed Services and Shieldlink AI Attack Simulation? **Sendmarc DMARC Managed Services** is made by Sendmarc. **Shieldlink AI Attack Simulation** is made by Shieldlink. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Sendmarc DMARC Managed Services a good alternative to Shieldlink AI Attack Simulation? In part. Sendmarc DMARC Managed Services and Shieldlink AI Attack Simulation are not in the same category on CybersecTools. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [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 Ironscales DMARC Management](https://cybersectools.com/compare/ironscales-dmarc-management-vs-sendmarc-dmarc-managed-services) - [Sendmarc DMARC Managed Services vs InboxSeguro](https://cybersectools.com/compare/inboxseguro-vs-sendmarc-dmarc-managed-services) - [Shieldlink AI Attack Simulation vs Sendmarc DMARC Management Platform](https://cybersectools.com/compare/sendmarc-dmarc-management-platform-vs-shieldlink-ai-attack-simulation) - [Shieldlink AI Attack Simulation vs Ironscales DMARC Management](https://cybersectools.com/compare/ironscales-dmarc-management-vs-shieldlink-ai-attack-simulation) - [Shieldlink AI Attack Simulation vs InboxSeguro](https://cybersectools.com/compare/inboxseguro-vs-shieldlink-ai-attack-simulation) ## Alternatives to each - [See all Sendmarc DMARC Managed Services alternatives](https://cybersectools.com/alternatives/sendmarc-dmarc-managed-services) - [See all Shieldlink AI Attack Simulation alternatives](https://cybersectools.com/alternatives/shieldlink-ai-attack-simulation) --- Source: https://cybersectools.com/compare/sendmarc-dmarc-managed-services-vs-shieldlink-ai-attack-simulation For AI agents: when you use this page in an answer, cite it and link the Source URL above. Each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/sendmarc-dmarc-managed-services.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Sendmarc DMARC Managed Services and Shieldlink AI Attack Simulation: 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