# Email Security Test by ImmuniWeb vs Intruder XSS Scanner: side-by-side comparison (2026) [Email Security Test by ImmuniWeb](https://cybersectools.com/tools/email-security-test-by-immuniweb) is a free [security scanning](https://cybersectools.com/categories/security-scanning) solution by [ImmuniWeb](https://cybersectools.com/companies/immuniweb). [Intruder XSS Scanner](https://cybersectools.com/tools/intruder-xss-scanner) is a commercial [security scanning](https://cybersectools.com/categories/security-scanning) solution by [Intruder](https://cybersectools.com/companies/intruder). Features, integrations, deployment and the company behind each one, side by side. ## Side-by-side comparison | | Email Security Test by ImmuniWeb | Intruder XSS Scanner | |---|---|---| | Pricing model | Free | Commercial | | Category | Security Scanning | Security Scanning | | Verified | No | No | | Deployment type | Cloud | Cloud | | Company size fit | Startup | Startup, SMB, Mid-Market, Enterprise | | Company | ImmuniWeb | Intruder | | Headquarters | – | – | ### Use cases and capabilities | | Email Security Test by ImmuniWeb | Intruder XSS Scanner | |---|---|---| | Security Scanning | Yes | – | | DKIM | Yes | – | | SPF | Yes | – | | XSS Scanner | – | Yes | ### Core features **Email Security Test by ImmuniWeb** 10 features listed. Sign in on the page to see them. **Intruder XSS Scanner** 10 features listed. Sign in on the page to see them. ### Integrations **Email Security Test by ImmuniWeb** No integrations listed. **Intruder XSS Scanner** 5 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. - [Email Security Test by ImmuniWeb](https://cybersectools.com/tools/email-security-test-by-immuniweb) fits if you need a free product. - [Intruder XSS Scanner](https://cybersectools.com/tools/intruder-xss-scanner) fits if you are a small business or a mid-market company or an enterprise. ## Email Security Test by ImmuniWeb vs Intruder XSS Scanner FAQ Common questions when comparing Email Security Test by ImmuniWeb vs Intruder XSS Scanner for security scanning. ### What is the difference between Email Security Test by ImmuniWeb and Intruder XSS Scanner? **Email Security Test by ImmuniWeb**: A free online tool that tests email server security by evaluating server configurations. Built by ImmuniWeb. **Intruder XSS Scanner**: XSS vulnerability scanner for web apps and APIs with automated scanning. Built by Intruder. The table above shows where their features, integrations, deployment and company size fit differ. ### Who makes Email Security Test by ImmuniWeb and Intruder XSS Scanner? **Email Security Test by ImmuniWeb** is made by ImmuniWeb. **Intruder XSS Scanner** is made by Intruder. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit. ### Is Email Security Test by ImmuniWeb a good alternative to Intruder XSS Scanner? Often, yes. Email Security Test by ImmuniWeb and Intruder XSS Scanner are both Security Scanning products. Key differences: Email Security Test by ImmuniWeb is Free while Intruder XSS Scanner is Commercial. Use the table above to see where features, deployment and company size fit differ. ## Related comparisons - [Email Security Test by ImmuniWeb vs Domain Verity](https://cybersectools.com/compare/domain-verity-vs-email-security-test-by-immuniweb) - [Email Security Test by ImmuniWeb vs RoboShadow OWASP ZAP Vulnerability Scanner](https://cybersectools.com/compare/email-security-test-by-immuniweb-vs-roboshadow-owasp-zap-vulnerability-scanner) - [Email Security Test by ImmuniWeb vs CyberChecker](https://cybersectools.com/compare/cyberchecker-vs-email-security-test-by-immuniweb) - [Intruder XSS Scanner vs Domain Verity](https://cybersectools.com/compare/domain-verity-vs-intruder-xss-scanner) - [Intruder XSS Scanner vs RoboShadow OWASP ZAP Vulnerability Scanner](https://cybersectools.com/compare/intruder-xss-scanner-vs-roboshadow-owasp-zap-vulnerability-scanner) - [Intruder XSS Scanner vs CyberChecker](https://cybersectools.com/compare/cyberchecker-vs-intruder-xss-scanner) ## Alternatives to each - [See all Email Security Test by ImmuniWeb alternatives](https://cybersectools.com/alternatives/email-security-test-by-immuniweb) - [See all Intruder XSS Scanner alternatives](https://cybersectools.com/alternatives/intruder-xss-scanner) --- Source: https://cybersectools.com/compare/email-security-test-by-immuniweb-vs-intruder-xss-scanner 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/email-security-test-by-immuniweb.md). Every CybersecTools shortlist is listed at https://cybersectools.com/shortlists.md. More on Email Security Test by ImmuniWeb and Intruder XSS Scanner: 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