# Microsoft Exchange 2019 Transport Filtering Agent vs Sublime Email Security: side-by-side comparison (2026) [Microsoft Exchange 2019 Transport Filtering Agent](https://cybersectools.com/tools/microsoft-exchange-2019-transport-filtering-agent) is a free [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution. [Sublime Email Security](https://cybersectools.com/tools/sublime-email-security) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [Sublime Security](https://cybersectools.com/companies/sublime-security). 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 | | Microsoft Exchange 2019 Transport Filtering Agent | Sublime Email Security | |---|---|---| | Pricing model | Free | Commercial | | Category | Email Security Platforms | Email Security Platforms | | Verified | No | No | | Deployment type | On-Premises | Cloud | | Company size fit | SMB, Mid-Market, Enterprise | SMB, Mid-Market, Enterprise | | GitHub stars | 20 | – | | Last commit | Aug 2021 | – | | Company | – | Sublime Security | | Headquarters | – | – | ### Use cases and capabilities | | Microsoft Exchange 2019 Transport Filtering Agent | Sublime Email Security | |---|---|---| | Regex | Yes | – | | Natural Language Processing | – | Yes | ### Core features **Microsoft Exchange 2019 Transport Filtering Agent** No features listed. **Sublime Email Security** 10 features listed. Sign in on the page to see them. ### Integrations **Microsoft Exchange 2019 Transport Filtering Agent** No integrations listed. **Sublime Email Security** 2 integrations listed. Sign in on the page to see them. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [Microsoft Exchange 2019 Transport Filtering Agent](https://cybersectools.com/tools/microsoft-exchange-2019-transport-filtering-agent) fits if you need to run it on your own servers, you need a free product and you want an open-source product. - [Sublime Email Security](https://cybersectools.com/tools/sublime-email-security) fits if you want a cloud product. ## Microsoft Exchange 2019 Transport Filtering Agent vs Sublime Email Security FAQ Common questions when comparing Microsoft Exchange 2019 Transport Filtering Agent vs Sublime Email Security for email security platforms. ### What is the difference between Microsoft Exchange 2019 Transport Filtering Agent and Sublime Email Security? **Microsoft Exchange 2019 Transport Filtering Agent**: Detects and handles potential malware in Microsoft Exchange 2019 messages with various techniques and third-party libraries. **Sublime Email Security**: AI-powered email security platform with agentic automation and detection. Built by Sublime Security. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Microsoft Exchange 2019 Transport Filtering Agent and Sublime Email Security? **Microsoft Exchange 2019 Transport Filtering Agent** is open-source with 20 GitHub stars. **Sublime Email Security** is made by Sublime Security. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Microsoft Exchange 2019 Transport Filtering Agent a good alternative to Sublime Email Security? Often, yes. Microsoft Exchange 2019 Transport Filtering Agent and Sublime Email Security are both Email Security Platforms products. Key differences: Microsoft Exchange 2019 Transport Filtering Agent is Free while Sublime Email Security is Commercial, Microsoft Exchange 2019 Transport Filtering Agent is open-source. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Microsoft Exchange 2019 Transport Filtering Agent vs IRONSCALES Adaptive AI Email Security](https://cybersectools.com/compare/ironscales-adaptive-ai-email-security-vs-microsoft-exchange-2019-transport-filtering-agent) - [Microsoft Exchange 2019 Transport Filtering Agent vs Sophos Email](https://cybersectools.com/compare/microsoft-exchange-2019-transport-filtering-agent-vs-sophos-email) - [Microsoft Exchange 2019 Transport Filtering Agent vs Microsoft Defender for Office 365](https://cybersectools.com/compare/microsoft-defender-for-office-365-vs-microsoft-exchange-2019-transport-filtering-agent) - [Sublime Email Security vs IRONSCALES Adaptive AI Email Security](https://cybersectools.com/compare/ironscales-adaptive-ai-email-security-vs-sublime-email-security) - [Sublime Email Security vs Sophos Email](https://cybersectools.com/compare/sophos-email-vs-sublime-email-security) - [Sublime Email Security vs Microsoft Defender for Office 365](https://cybersectools.com/compare/microsoft-defender-for-office-365-vs-sublime-email-security) ## Alternatives to each - [See all Microsoft Exchange 2019 Transport Filtering Agent alternatives](https://cybersectools.com/alternatives/microsoft-exchange-2019-transport-filtering-agent) - [See all Sublime Email Security alternatives](https://cybersectools.com/alternatives/sublime-email-security) --- Source: https://cybersectools.com/compare/microsoft-exchange-2019-transport-filtering-agent-vs-sublime-email-security 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/microsoft-exchange-2019-transport-filtering-agent.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Microsoft Exchange 2019 Transport Filtering Agent and Sublime Email Security: 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