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Email infrastructure of gptzero.me

According to Live Direct Marketing's daily DNS scan (July 13, 2026), gptzero.me (Tranco rank #12,452) receives mail via Google Workspace and sends through HubSpot, Zendesk. 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, Zendesk
SaaS senders in SPFnone detected
DMARC policyp=reject
DMARC recordv=DMARC1; p=reject; sp=reject; pct=100; rua=mailto:re+mvpiqtcbrpa@dmarc.postmarkapp.com; aspf=r;
Tranco rank#12,452
Snapshot2026-07-13 (updated daily)

Frequently asked questions

What email provider does gptzero.me use?

gptzero.me 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 gptzero.me use?

gptzero.me authorises HubSpot, Zendesk in its SPF record as of July 13, 2026.

Does gptzero.me enforce DMARC?

Yes — gptzero.me 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 gptzero.me at Gmail, Outlook, Yandex and Mail.ru.
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