Email Security Test by ImmuniWeb vs RoboShadow OWASP ZAP Vulnerability Scanner: side-by-side comparison (2026)

Email Security Test by ImmuniWeb: A free online tool that tests email server security by evaluating server configurations. Built by ImmuniWeb.

RoboShadow OWASP ZAP Vulnerability Scanner: Web app & network vulnerability scanner integrating OWASP ZAP, Shodan & Nmap. Built by RoboShadow.

The table above shows where their features, integrations, deployment and company size fit differ.

Email Security Test by ImmuniWeb is made by ImmuniWeb. RoboShadow OWASP ZAP Vulnerability Scanner is made by RoboShadow. The vendor behind a product decides its roadmap, support, and longevity, so check each company's profile before you commit.

Often, yes. Email Security Test by ImmuniWeb and RoboShadow OWASP ZAP Vulnerability Scanner are both Security Scanning products. Key differences: Email Security Test by ImmuniWeb is Free while RoboShadow OWASP ZAP Vulnerability Scanner is Commercial. Use the table above to see where features, deployment and company size fit differ.