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Email infrastructure of pnas.org

According to Live Direct Marketing's daily DNS scan (July 12, 2026), pnas.org (Tranco rank #1,966) sends through SendGrid (Twilio). Its DMARC policy is p=none (monitor only) — like the majority of DMARC publishers (53% don't enforce).

Mailbox provider (MX)no MX / not classified
ESPs in SPFSendGrid (Twilio)
SaaS senders in SPFnone detected
DMARC policyp=none
DMARC recordv=DMARC1; p=none; rua=mailto:security-dmarc@nas.edu
Tranco rank#1,966
Snapshot2026-07-12 (updated daily)

Frequently asked questions

What email provider does pnas.org use?

pnas.org has no classifiable MX record as of July 12, 2026, per Live Direct Marketing's daily Tranco top-1M scan.

What ESP does pnas.org use?

pnas.org authorises SendGrid (Twilio) in its SPF record as of July 12, 2026.

Does pnas.org enforce DMARC?

No — pnas.org publishes p=none, which only monitors and does not block spoofing (as of July 12, 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 pnas.org at Gmail, Outlook, Yandex and Mail.ru.
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