Vendor Security Posture - DMARC, TLS, Headers & security.txt

Email Domain Scraper - Extract Emails From Websites by Domain

s-r/free-email-domain-scraper

Enter up to 10 company domains or website URLs and get the email addresses published for each one: one row per address with its domain, ready for CSV, Excel or JSON. For lead generation, outreach lists and finding press, sales or support contacts. You only pay per email found.

Email Domain Blacklist Checker

trovevault/email-domain-blacklist-checker

Check any domain against 15 email blacklists (Spamhaus, SURBL, SpamCop, Barracuda and more) and validate SPF, DMARC and MX records. No API keys required. Export data, run via API, schedule and monitor runs, or integrate with other tools.

Website Status Checker & Bulk Domain Check: Live, Parked, Dead

pvalyou/website-liveness-check

Bulk domain check, one verdict per domain with the evidence: live, stale, placeholder, redirected, parked, expired or dead, a 0 to 100 score and the reason. Plus WHOIS registration, domain age and expiry, email provider with SPF and DMARC, certificate, hosting and tech. $0.001 a domain.

Check thousands of domains at once: available or registered, plus registrar, creation and expiry dates, days until expiry, and nameservers. Check a name across many TLDs, or find domains expiring soon. Uses official RDAP, the modern WHOIS. Free.

HTTP Probe -- TLS, Security Headers, Redirects

jungle_synthesizer/ssl-security-headers-checker

Bulk site-health probe: TLS certificate, security-header grading (CSP, HSTS, X-Frame-Options, Permissions-Policy + 5 others, A/B/C/D/F grade), redirect chain, TTFB, HTTP/2 + HTTP/3, IPv6 reachability. Built for devops, security, and CI pipelines.

Passive bulk check of HSTS, CSP, cookie flags, HTTPS redirect, TLS versions and certificate expiry. A-F grade with prioritised fix recommendations.

Email Domain Security Auditor — $0.50/1K

scrapesignal_labs/email-domain-security-auditor

Audit MX, SPF, DMARC, DKIM, MTA-STS, TLS-RPT, BIMI, DNS, provider, issues, and readiness score for domain lists.

Domain Intelligence Scraper

lergassy/domain-intelligence-scraper

Analyze any domain in one row: WHOIS (registrar, dates, nameservers), DNS records, SSL certificate, technology stack, subdomains from Certificate Transparency, and hosting with ASN. HTTP and DNS only, no login or API key. For lead enrichment, domain due diligence, SEO and AI agents.

Email DMARC Auditor — SPF/DKIM/DMARC Bulk Check

nexgendata/email-dmarc-auditor

Check email compliance and run domain audits in bulk: parses SPF, DMARC and DKIM records, returns a deliverability score (0-100) and step-by-step remediation actions per domain.

Bulk DMARC, SPF and DKIM checks: mail provider, SPF lookup count, MTA-STS, BIMI, TLS-RPT, optional HTTPS, score and fixes. Public DNS and optional HTTPS requests; no SMTP or mailbox probing. $4/1,000 domains on Apify Free; discounts on paid Apify plans. Optional summary: $0.01/run.