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SaaS email security & tech stack report

How 50 well-known SaaS companies protect their email domain (SPF, DMARC), who hosts their mail, what their homepage runs on, and whether they publish llms.txt and security.txt. Updated 2026-09-23 13:56 UTC.

78%DMARC p=reject
0%no DMARC enforcement (none / missing)
44%SPF hard fail (-all)
72%mail on Google Workspace
2%mail on Microsoft 365
78%publish llms.txt
62%publish security.txt
Need this for your own list of domains? DomainDNA on Apify returns one JSON record per domain (tech stack, MX provider, SPF/DMARC, TLS expiry, domain age from RDAP, security headers, llms.txt) for lead enrichment, security audits or AI agents via Apify's MCP server. Priced per domain, no subscription. Raw snapshot: latest.json.
DomainMail providerSPFDMARCTech (homepage)TLS days leftTLS issuerAgeSec. headersllms.txtsecurity.txt
airtable.comGoogle Workspace~allp=rejectSanity, Next.js, Amazon CloudFront, Vercel125Amazon22y3/6
anthropic.comGoogle Workspace~allp=rejectWebflow, Sanity, Cloudflare, YouTube embed72Let's Encrypt24y2/6✓
asana.comGoogle Workspace-allp=quarantineNext.js, Netlify, Google Tag Manager, OneTrust49Let's Encrypt17y4/6✓✓
atlassian.comProofpoint~allp=rejectAmazon CloudFront139Amazon25y4/6✓✓
auth0.comProofpoint-allp=quarantineContentful, Next.js, Cloudflare, Vercel57Let's Encrypt13y5/6✓✓
box.comProofpoint~allp=rejectDrupal, Cloudflare, New Relic90DigiCert Inc27y4/6
calendly.comGoogle Workspace~allp=quarantineAstro, Cloudflare, Amazon CloudFront, Google Tag Manager71Let's Encrypt13y2/6✓✓
canva.comGoogle Workspace-allp=rejectCloudflare85Amazon25y5/6✓
clickup.comGoogle Workspace-allp=rejectContentful, Next.js, Amazon CloudFront, Amazon S3181Amazon25y4/6✓✓
cloudflare.comOther / self-hosted-allp=rejectAstro, Tailwind CSS, Cloudflare, Google Tag Manager72Google Trust Services17y6/6✓✓
databricks.comGoogle Workspace~allp=rejectDrupal, Gatsby, Tailwind CSS, Cloudflare64Amazon15y5/6✓✓
datadoghq.comGoogle Workspace~allp=rejectAmazon CloudFront, Amazon S3, Google Tag Manager, Marketo183DigiCert Inc16y5/6✓
digitalocean.comGoogle Workspace-allp=rejectNext.js, Cloudflare, Amplitude77Google Trust Services26y2/6✓
docker.comGoogle Workspace-allp=quarantineWordPress, Fastly, Google Tag Manager, Adobe Analytics34Let's Encrypt31y5/6✓
docusign.comProofpoint-allp=rejectContentful, Next.js, Netlify, Google Tag Manager123DigiCert Inc27y2/6
dropbox.comProofpoint~allp=reject21DigiCert Inc31y5/6✓✓
figma.comGoogle Workspace-allp=quarantineSanity, Next.js, Amazon CloudFront, Netlify133Amazon27y4/6✓
freshworks.comGoogle Workspace~allp=quarantineCloudflare123Amazon28y6/6✓✓
github.comMicrosoft 365~allp=quarantineContentful, GitHub Pages67Sectigo Limited18y5/6✓✓
gitlab.comGoogle Workspace-allp=rejectNuxt, Cloudflare, Marketo, OneTrust48Sectigo Limited22y1/6✓
heroku.comGoogle Workspace~allp=rejectWordPress, jQuery, Google Tag Manager, OneTrust73Let's Encrypt19y6/6✓
hubspot.comGoogle Workspace?p=rejectHubSpot CMS, Cloudflare, Google Tag Manager, HubSpot78Google Trust Services21y5/6✓✓
intercom.comGoogle Workspace-allp=quarantineSanity, Next.js, Tailwind CSS, Amazon CloudFront79Amazon32y2/6✓✓
linear.appGoogle Workspace~allp=rejectNext.js, Cloudflare, Google Cloud82Let's Encrypt8y4/6✓✓
mailchimp.comCisco Secure Email~allp=rejectAkamai, FullStory, OneTrust115DigiCert Inc25y2/6✓✓
monday.comGoogle Workspace-allp=rejectWebflow, Cloudflare, Amazon CloudFront, Google Tag Manager84GoDaddy.com, Inc.31y1/6✓
mongodb.comGoogle Workspace-allp=rejectNext.js, Tailwind CSS, Amazon CloudFront41Let's Encrypt18y0/6✓
netlify.comGoogle Workspace-allp=rejectAstro, Netlify, Google Tag Manager, HubSpot135DigiCert Inc12y2/6✓
newrelic.comGoogle Workspace~allp=rejectDrupal, jQuery, Fastly, New Relic138DigiCert Inc20y3/6✓✓
notion.so~allp=quarantineContentful, Next.js, Tailwind CSS, Cloudflare49Google Trust Services3/6✓
okta.comProofpoint-allp=rejectCloudflare, Fastly, Google Tag Manager, Adobe Analytics70Amazon22y4/6✓✓
openai.comGoogle Workspace-allp=rejectContentful, Next.js, Tailwind CSS, Cloudflare82Google Trust Services19y3/6✓
pagerduty.comGoogle Workspace~allp=rejectWordPress, Next.js, Tailwind CSS, Cloudflare176DigiCert Inc17y1/6✓
salesforce.comProofpoint~allp=rejectWordPress, Akamai, Google Tag Manager, Google Fonts198DigiCert Inc27y4/6✓
sendgrid.comGoogle Workspace~allp=rejectAmazon CloudFront, Amazon S3, Google Tag Manager, Segment158GoDaddy.com, Inc.17y0/6✓
sentry.ioGoogle Workspace-allp=rejectAstro, Tailwind CSS, Vercel, Google Cloud150DigiCert Inc1/6✓✓
shopify.comGoogle Workspace~allp=rejectShopify, Tailwind CSS, Cloudflare46Google Trust Services21y2/6✓✓
slack.comGoogle Workspace-allp=rejectGoogle Tag Manager, OneTrust, YouTube embed41Let's Encrypt33y3/6✓✓
snowflake.comGoogle Workspace-allp=rejectCloudflare, Fastly, Google Tag Manager, Adobe Analytics44DigiCert Inc31y6/6✓
squarespace.comGoogle Workspace~allp=rejectSquarespace, Google Tag Manager161DigiCert Inc23y2/6✓✓
stripe.comGoogle Workspace~allp=rejectNext.js50DigiCert Inc31y5/6✓✓
twilio.comGoogle Workspace~allp=rejectFastly, Amazon CloudFront, Google Tag Manager, Segment125Amazon18y3/6✓
typeform.comGoogle Workspace-allp=rejectWebflow, Cloudflare, Amazon CloudFront, Google Tag Manager159Amazon24y0/6✓
vercel.comGoogle Workspace~allp=quarantineMintlify, Next.js, Tailwind CSS, Vercel89Let's Encrypt26y5/6✓✓
webflow.comGoogle Workspace?allp=rejectWebflow, Cloudflare, Google Tag Manager, Google reCAPTCHA143Amazon23y4/6✓
wix.comGoogle Workspace~allp=quarantineWix, Fastly, Google Cloud43Let's Encrypt31y3/6✓
wordpress.comOther / self-hosted-allp=rejectWordPress, React71Let's Encrypt26y3/6✓✓
zapier.comGoogle Workspace-allp=rejectContentful, Next.js, Amazon CloudFront, Vercel155Amazon14y4/6✓
zendesk.comMimecast~allp=rejectNext.js, Cloudflare, Google Tag Manager, Zendesk62Let's Encrypt21y3/6✓✓
zoom.usProofpoint~allp=rejectCloudflare, Google Tag Manager, OneTrust97DigiCert Inc1/6
Run it on your own list: try DomainDNA on Apify (check tech stack, email security and domain age for your own domain list; first try costs cents, pay only for results).
More free from CyberMax: All free CyberMax demos & datasets · Hollerdex: How to Contact SaaS & AI Companies · Linkheft: Free Domain Authority Checker · DomainDNA: SaaS Email Security & Tech Stack Snapshot (free dataset)