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According to Live Direct Marketing's daily DNS scan (July 13, 2026), study.com (Tranco rank #4,975) receives mail via Microsoft 365 and sends through SparkPost, FreshMail (PL), Mandrill. Its DMARC policy is p=quarantine — one of the minority (47%) of DMARC publishers that actually enforce.
| Mailbox provider (MX) | Microsoft 365 |
|---|---|
| ESPs in SPF | SparkPost, FreshMail (PL), Mandrill, Zoho ZeptoMail |
| SaaS senders in SPF | ClearSlide |
| DMARC policy | p=quarantine |
| DMARC record | v=DMARC1; p=quarantine;pct=100; rua=mailto:re+p5muqfprkoc@dmarc.postmarkapp.com,mailto:dmarc_agg@dmarc.250ok.net; ruf=mailto:dmarc_fr@dmarc.250ok.net; sp=reject; aspf=r; rf=afrf; fo=1 |
| Tranco rank | #4,975 |
| Snapshot | 2026-07-13 (updated daily) |
study.com uses Microsoft 365 for inbound mail (detected from its primary MX record) as of July 13, 2026, per Live Direct Marketing's daily Tranco top-1M scan.
study.com authorises SparkPost, FreshMail (PL), Mandrill, Zoho ZeptoMail in its SPF record as of July 13, 2026.
Partially — study.com publishes p=quarantine (as of July 13, 2026).