# Cisco Secure Email Threat Defense vs Kaseya 365 Advanced Threat Protection: side-by-side comparison (2026) [Cisco Secure Email Threat Defense](https://cybersectools.com/tools/cisco-secure-email-threat-defense) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [Cisco](https://cybersectools.com/companies/cisco). [Kaseya 365 Advanced Threat Protection](https://cybersectools.com/tools/kaseya-365-advanced-threat-protection) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [Kaseya](https://cybersectools.com/companies/kaseya). Features, integrations, deployment and the company behind each one, side by side. ## Our take What our shortlists say about the one we picked. ### [Cisco Secure Email Threat Defense](https://cybersectools.com/tools/cisco-secure-email-threat-defense) Best for: Cisco shops wanting Talos-backed filtering It is on the list as a Microsoft 365 product that can grow with you: you start in API mode and add the inline gateway later, from the same console. That suits a team that already runs Cisco security. Check fit first if you run Google Workspace or your own mail servers, because the product is built for Microsoft 365. From [Best Email Security Solutions for Business](https://cybersectools.com/shortlists/best-email-security-platforms), Fall 2026. Reviewed by [Nika (Nikoloz) Kokhreidze](https://cybersectools.com/about). 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 | | Cisco Secure Email Threat Defense | Kaseya 365 Advanced Threat Protection | |---|---|---| | 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 | Cisco | Kaseya | | Headquarters | – | – | ### Use cases and capabilities | | Cisco Secure Email Threat Defense | Kaseya 365 Advanced Threat Protection | |---|---|---| | Microsoft 365 | Yes | – | | Threat Analysis | Yes | – | ### Core features **Cisco Secure Email Threat Defense** 9 features listed. Sign in on the page to see them. **Kaseya 365 Advanced Threat Protection** 8 features listed. Sign in on the page to see them. ### Integrations **Cisco Secure Email Threat Defense** 3 integrations listed. Sign in on the page to see them. **Kaseya 365 Advanced Threat Protection** 44 integrations listed. Sign in on the page to see them. ## Cisco Secure Email Threat Defense vs Kaseya 365 Advanced Threat Protection FAQ Common questions when comparing Cisco Secure Email Threat Defense vs Kaseya 365 Advanced Threat Protection for email security platforms. ### What is the difference between Cisco Secure Email Threat Defense and Kaseya 365 Advanced Threat Protection? **Cisco Secure Email Threat Defense**: Email threat protection for Microsoft 365 with advanced detection capabilities. Built by Cisco. **Kaseya 365 Advanced Threat Protection**: ATP solution for SaaS & email with AI-driven detection & auto-response. Built by Kaseya. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Cisco Secure Email Threat Defense and Kaseya 365 Advanced Threat Protection? **Cisco Secure Email Threat Defense** is made by Cisco. **Kaseya 365 Advanced Threat Protection** is made by Kaseya. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Cisco Secure Email Threat Defense a good alternative to Kaseya 365 Advanced Threat Protection? Often, yes. Cisco Secure Email Threat Defense and Kaseya 365 Advanced Threat Protection are both Email Security Platforms products. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Cisco Secure Email Threat Defense vs Microsoft Defender for Office 365](https://cybersectools.com/compare/cisco-secure-email-threat-defense-vs-microsoft-defender-for-office-365) - [Cisco Secure Email Threat Defense vs Ocean Agentic Email Security Platform](https://cybersectools.com/compare/cisco-secure-email-threat-defense-vs-ocean-agentic-email-security-platform) - [Cisco Secure Email Threat Defense vs NoSpamProxy Protection](https://cybersectools.com/compare/cisco-secure-email-threat-defense-vs-nospamproxy-protection) - [Kaseya 365 Advanced Threat Protection vs Microsoft Defender for Office 365](https://cybersectools.com/compare/kaseya-365-advanced-threat-protection-vs-microsoft-defender-for-office-365) - [Kaseya 365 Advanced Threat Protection vs Ocean Agentic Email Security Platform](https://cybersectools.com/compare/kaseya-365-advanced-threat-protection-vs-ocean-agentic-email-security-platform) - [Kaseya 365 Advanced Threat Protection vs NoSpamProxy Protection](https://cybersectools.com/compare/kaseya-365-advanced-threat-protection-vs-nospamproxy-protection) ## Alternatives to each - [See all Cisco Secure Email Threat Defense alternatives](https://cybersectools.com/alternatives/cisco-secure-email-threat-defense) - [See all Kaseya 365 Advanced Threat Protection alternatives](https://cybersectools.com/alternatives/kaseya-365-advanced-threat-protection) --- Source: https://cybersectools.com/compare/cisco-secure-email-threat-defense-vs-kaseya-365-advanced-threat-protection For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/cisco-secure-email-threat-defense.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Cisco Secure Email Threat Defense and Kaseya 365 Advanced Threat Protection: 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