# Microsoft Exchange 2019 Transport Filtering Agent vs SmarterTools SmarterMail: 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. [SmarterTools SmarterMail](https://cybersectools.com/tools/smartertools-smartermail) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [SmarterTools](https://cybersectools.com/companies/smartertools). 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 | SmarterTools SmarterMail | |---|---|---| | Pricing model | Free | Commercial | | Category | Email Security Platforms | Email Security Platforms | | Verified | No | No | | Deployment type | On-Premises | On-Premises | | Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise | | GitHub stars | 20 | – | | Last commit | Aug 2021 | – | | Company | – | SmarterTools | | Headquarters | – | – | ### Use cases and capabilities | | Microsoft Exchange 2019 Transport Filtering Agent | SmarterTools SmarterMail | |---|---|---| | Regex | Yes | – | | Spam Prevention | – | Yes | | Linux | – | Yes | | Windows | – | Yes | | DKIM | – | Yes | | SPF | – | Yes | | DMARC | – | Yes | ### Core features **Microsoft Exchange 2019 Transport Filtering Agent** No features listed. **SmarterTools SmarterMail** 10 features listed. Sign in on the page to see them. ### Integrations **Microsoft Exchange 2019 Transport Filtering Agent** No integrations listed. **SmarterTools SmarterMail** 6 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 a free product and you want an open-source product. - [SmarterTools SmarterMail](https://cybersectools.com/tools/smartertools-smartermail) fits if you are a startup. ## Microsoft Exchange 2019 Transport Filtering Agent vs SmarterTools SmarterMail FAQ Common questions when comparing Microsoft Exchange 2019 Transport Filtering Agent vs SmarterTools SmarterMail for email security platforms. ### What is the difference between Microsoft Exchange 2019 Transport Filtering Agent and SmarterTools SmarterMail? **Microsoft Exchange 2019 Transport Filtering Agent**: Detects and handles potential malware in Microsoft Exchange 2019 messages with various techniques and third-party libraries. **SmarterTools SmarterMail**: Email server with antispam, antivirus, and security features for Linux/Windows. Built by SmarterTools. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Microsoft Exchange 2019 Transport Filtering Agent and SmarterTools SmarterMail? **Microsoft Exchange 2019 Transport Filtering Agent** is open-source with 20 GitHub stars. **SmarterTools SmarterMail** is made by SmarterTools. 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 SmarterTools SmarterMail? Often, yes. Microsoft Exchange 2019 Transport Filtering Agent and SmarterTools SmarterMail are both Email Security Platforms products. Key differences: Microsoft Exchange 2019 Transport Filtering Agent is Free while SmarterTools SmarterMail 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 MX Layer Outbound Email Filtering](https://cybersectools.com/compare/microsoft-exchange-2019-transport-filtering-agent-vs-mx-layer-outbound-email-filtering) - [Microsoft Exchange 2019 Transport Filtering Agent vs PowerDMARC Hosted DMARC](https://cybersectools.com/compare/microsoft-exchange-2019-transport-filtering-agent-vs-powerdmarc-hosted-dmarc) - [Microsoft Exchange 2019 Transport Filtering Agent vs Sendmarc DMARC Managed Services](https://cybersectools.com/compare/microsoft-exchange-2019-transport-filtering-agent-vs-sendmarc-dmarc-managed-services) - [SmarterTools SmarterMail vs MX Layer Outbound Email Filtering](https://cybersectools.com/compare/mx-layer-outbound-email-filtering-vs-smartertools-smartermail) - [SmarterTools SmarterMail vs PowerDMARC Hosted DMARC](https://cybersectools.com/compare/powerdmarc-hosted-dmarc-vs-smartertools-smartermail) - [SmarterTools SmarterMail vs Sendmarc DMARC Managed Services](https://cybersectools.com/compare/sendmarc-dmarc-managed-services-vs-smartertools-smartermail) ## Alternatives to each - [See all Microsoft Exchange 2019 Transport Filtering Agent alternatives](https://cybersectools.com/alternatives/microsoft-exchange-2019-transport-filtering-agent) - [See all SmarterTools SmarterMail alternatives](https://cybersectools.com/alternatives/smartertools-smartermail) --- Source: https://cybersectools.com/compare/microsoft-exchange-2019-transport-filtering-agent-vs-smartertools-smartermail 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 SmarterTools SmarterMail: 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