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Email infrastructure of openai.com

According to Live Direct Marketing's daily DNS scan (July 13, 2026), openai.com (Tranco rank #261) receives mail via Google Workspace and sends through HubSpot, Marketo (Adobe). Its DMARC policy is p=reject — one of the minority (47%) of DMARC publishers that actually enforce.

Mailbox provider (MX)Google Workspace
ESPs in SPFHubSpot, Marketo (Adobe)
SaaS senders in SPFOracle Cloud
DMARC policyp=reject
DMARC recordv=DMARC1; p=reject; rua=mailto:tdfyvl0n@ag.dmarcian.com; ruf=mailto:tdfyvl0n@fr.dmarcian.com; fo=1; aspf=r
Tranco rank#261
Snapshot2026-07-13 (updated daily)

Frequently asked questions

What email provider does openai.com use?

openai.com uses Google Workspace for inbound mail (detected from its primary MX record) as of July 13, 2026, per Live Direct Marketing's daily Tranco top-1M scan.

What ESP does openai.com use?

openai.com authorises HubSpot, Marketo (Adobe) in its SPF record as of July 13, 2026.

Does openai.com enforce DMARC?

Yes — openai.com publishes p=reject, the strictest DMARC policy (as of July 13, 2026).

DNS records say who should deliver your mail — they don't say whether it lands in the inbox. Run a free inbox placement test for openai.com at Gmail, Outlook, Yandex and Mail.ru.
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