# NoSpamProxy Protection vs Sublime Security Sublime Rules: side-by-side comparison (2026) [NoSpamProxy Protection](https://cybersectools.com/tools/nospamproxy-protection) is a commercial [email security platforms](https://cybersectools.com/categories/email-security-platforms) solution by [NoSpamProxy](https://cybersectools.com/companies/nospamproxy). [Sublime Security Sublime Rules](https://cybersectools.com/tools/sublime-security-sublime-rules) is a free [detection engineering](https://cybersectools.com/categories/detection-engineering) 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 | | NoSpamProxy Protection | Sublime Security Sublime Rules | |---|---|---| | Pricing model | Commercial | Free | | Category | Email Security Platforms | Detection Engineering | | Verified | No | No | | Deployment type | Hybrid | On-Premises | | Company size fit | SMB, Mid-Market, Enterprise | Startup, SMB, Mid-Market, Enterprise | | Company | NoSpamProxy | Sublime Security | | Headquarters | – | – | ### Use cases and capabilities | | NoSpamProxy Protection | Sublime Security Sublime Rules | |---|---|---| | Spam Prevention | Yes | – | | Ransomware Prevention | Yes | – | | GDPR | Yes | – | | Microsoft 365 | Yes | – | | Anomaly Detection | Yes | – | | URL Scanning | Yes | – | | Threat Analysis | Yes | – | | Fraud Detection | Yes | – | | Detection Rules | – | Yes | | Open Source | – | Yes | | YARA | – | Yes | ### Core features **NoSpamProxy Protection** 10 features listed. Sign in on the page to see them. **Sublime Security Sublime Rules** 10 features listed. Sign in on the page to see them. ### Integrations **NoSpamProxy Protection** 1 integration listed. Sign in on the page to see them. **Sublime Security Sublime Rules** No integrations listed. ## Which one fits you Based on what each listing shows: deployment, company size, price and open source. - [NoSpamProxy Protection](https://cybersectools.com/tools/nospamproxy-protection) fits if you need both cloud and on-premises options. - [Sublime Security Sublime Rules](https://cybersectools.com/tools/sublime-security-sublime-rules) fits if you need to run it on your own servers, you are a startup, you need a free product and you want an open-source product. ## NoSpamProxy Protection vs Sublime Security Sublime Rules FAQ Common questions when comparing NoSpamProxy Protection vs Sublime Security Sublime Rules for email security platforms. ### What is the difference between NoSpamProxy Protection and Sublime Security Sublime Rules? **NoSpamProxy Protection**: Email gateway that blocks spam, phishing and malware before inbox delivery, made, built by NoSpamProxy. **Sublime Security Sublime Rules**: Open-source detection rules for email attacks like BEC, phishing, and malware, built by Sublime Security. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes NoSpamProxy Protection and Sublime Security Sublime Rules? **NoSpamProxy Protection** is made by NoSpamProxy. **Sublime Security Sublime Rules** is open-source. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is NoSpamProxy Protection a good alternative to Sublime Security Sublime Rules? In part. NoSpamProxy Protection and Sublime Security Sublime Rules are not in the same category on CybersecTools. Key differences: NoSpamProxy Protection is Commercial while Sublime Security Sublime Rules is Free. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [NoSpamProxy Protection vs Iberlayer Email Guardian](https://cybersectools.com/compare/iberlayer-email-guardian-vs-nospamproxy-protection) - [NoSpamProxy Protection vs ESET Cloud Office Security](https://cybersectools.com/compare/eset-cloud-office-security-vs-nospamproxy-protection) - [NoSpamProxy Protection vs Ocean Agentic Email Security Platform](https://cybersectools.com/compare/nospamproxy-protection-vs-ocean-agentic-email-security-platform) - [Sublime Security Sublime Rules vs Iberlayer Email Guardian](https://cybersectools.com/compare/iberlayer-email-guardian-vs-sublime-security-sublime-rules) - [Sublime Security Sublime Rules vs ESET Cloud Office Security](https://cybersectools.com/compare/eset-cloud-office-security-vs-sublime-security-sublime-rules) - [Sublime Security Sublime Rules vs Ocean Agentic Email Security Platform](https://cybersectools.com/compare/ocean-agentic-email-security-platform-vs-sublime-security-sublime-rules) ## Alternatives to each - [See all NoSpamProxy Protection alternatives](https://cybersectools.com/alternatives/nospamproxy-protection) - [See all Sublime Security Sublime Rules alternatives](https://cybersectools.com/alternatives/sublime-security-sublime-rules) --- Source: https://cybersectools.com/compare/nospamproxy-protection-vs-sublime-security-sublime-rules For AI agents: each product above has its own Markdown page (add .md to its URL, for example https://cybersectools.com/tools/nospamproxy-protection.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on NoSpamProxy Protection and Sublime Security Sublime Rules: 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