CyberMax-tools/saas-email-security-snapshot

DomainDNA: SaaS email security & tech stack snapshot

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Check SPF, DMARC and MX for your own domains, by API: $5 for 1,000 checks. [Buy now →](https://data.cybermaxtools.com/buy/mailvett-api-pack?s=hf-saas-email-security-snapshot-top) · API key on screen the moment checkout ends · no subscription · 14-day refund if it doesn't work as described · help: cybermax.tools@gmail.com Need it fresh, filtered or via API? This free file is a snapshot (one scan of SaaS domains' email security), last updated 2026-09-23. - [Mailvett email and domain check API](https://data.cybermaxtools.com/buy/mailvett-api?s=hf-saas-email-security-snapshot) (50 free calls a day, $5 for 1,000 (no expiry, no subscription), or $19/month for 5,000): checks any address or domain live: MX and mail provider, SPF and DMARC, disposable and role flags, typo fixes and domain age, by REST API or MCP; pay by card in one click, key shown instantly. - [DomainDNA API $5 pack](https://data.cybermaxtools.com/buy/domaindna-api-pack?s=hf-saas-email-security-snapshot) ($5 for 1,000 domain checks, never expires): tech stack, email provider, SPF, DMARC and domain age for your own domains, by REST API or MCP. Pay by card, your API key is on screen the moment checkout ends; no account, no subscription. - [DomainDNA domain intel API (card checkout)](https://data.cybermaxtools.com/buy/domaindna?s=hf-saas-email-security-snapshot) (25 free domains a day, $5 for 1,000 (no expiry, no subscription), or $19/month for 5,000): checks tech stack (with evidence), email provider, SPF/DMARC and domain age for your own domains by REST API or MCP; pay by card in one click, key shown instantly, no Apify account needed (the DomainDNA Apify tool for bulk lists, TLS and monitor mode is linked from the same page). - [DomainDNA on Apify](https://data.cybermaxtools.com/buy/domaindna-apify?s=hf-saas-email-security-snapshot) ($0.004 per domain analyzed): checks tech stack, TLS, SPF/DMARC and domain age for your own domain lists, with a monitor mode that returns only changes. - Using it at work? [Commercial license + support](https://data.cybermaxtools.com/buy/dataset-license?s=hf-saas-email-security-snapshot) (from $49/year): invoice, PDF licence certificate, named support, freshness and availability commitments and an SLA; the data stays free and open for everyone. - [Get an email when this dataset updates](https://data.cybermaxtools.com/notify?ds=saas-email-security-snapshot&s=hf-saas-email-security-snapshot): free, double opt-in, unsubscribe any time. - [CyberMax Store](https://cybermaxtools.com/store/?utm_source=huggingface&utm_medium=dataset&utm_campaign=saas-email-security-snapshot): every CyberMax data product, API plan and weekly brief in one place.

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How do well-known SaaS companies protect their email domains and what do their websites run on? One row per domain per snapshot, from public DNS, TLS, RDAP and HTTP facts only:

• —Email security: mail provider (Google Workspace, Microsoft 365, Proofpoint...), SPF presence and all qualifier, SPF includes, DMARC policy (none / quarantine / reject), subdomain policy, pct, reporting enabled.
• —Infrastructure: nameservers, TLS issuer, protocol and days until certificate expiry, registrar, domain age and expiry.
• —Website: detected technologies and categories (CMS, framework, CDN, analytics, marketing automation...), SaaS domain-verification TXT records (which tools a company has verified), security-headers score (0-6), robots.txt / sitemap.xml / llms.txt / security.txt presence.

First snapshot (2026-09-23), 50 SaaS domains: 39 publish DMARC p=reject and 11 p=quarantine; 36 receive mail on Google Workspace and 8 on Proofpoint; 39 serve an llms.txt and 31 a security.txt.

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Use it

from datasets import load_dataset
ds = load_dataset("CyberMax-tools/saas-email-security-snapshot", split="train")
df = ds.to_pandas()
print(df.groupby("dmarc_policy").domain.count())
print(df[df.dmarc_policy != "reject"][["domain", "dmarc_policy", "mx_provider"]])

Files

data/snapshot-YYYY-MM-DD.parquet (one file per refresh, all in one train split; filter by snapshot_date to compare over time) and the same rows as .jsonl.

Get fresh data

• —Any domain list, on demand (JSON for AI agents, MCP-callable): DomainDNA on the Apify Store.
• —Browse this snapshot in your browser: free DomainDNA Space.

Notes

Public, non-personal data about company domains only. A snapshot, not a security audit: DNS and websites change daily. Detections are heuristic (tag and header fingerprints). Not affiliated with any company listed.

License: CC BY 4.0. Built by CyberMax.

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More free from CyberMax

• —All free CyberMax demos & datasets
• —DomainDNA: SaaS Email Security Report
• —Linkheft Open Domain Ranks (10.3M domains) <!-- cybermax-xlinks:end -->

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Quickstart notebook

Load this dataset with pandas and see real outputs in the quickstart notebook. Need it refreshed for your own list? Tech Stack Detector & Technology Lookup + WHOIS — DomainDNA. <!-- cybermax-notebook:end -->