← Look up another domain · Email Stats home
According to Live Direct Marketing's daily DNS scan (July 13, 2026), codecademy.com (Tranco rank #5,232) receives mail via Microsoft 365 and sends through Customer.io, Zendesk. Its DMARC policy is p=reject — one of the minority (47%) of DMARC publishers that actually enforce.
| Mailbox provider (MX) | Microsoft 365 |
|---|---|
| ESPs in SPF | Customer.io, Zendesk |
| SaaS senders in SPF | Extole |
| DMARC policy | p=reject |
| DMARC record | v=DMARC1; p=reject; sp=reject; adkim=s; aspf=s; rua=mailto:dmarc-forensics@skillsoft.com; ruf=mailto:dmarc-records@skillsoft.com; fo=1:s:d |
| Tranco rank | #5,232 |
| Snapshot | 2026-07-13 (updated daily) |
codecademy.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.
codecademy.com authorises Customer.io, Zendesk in its SPF record as of July 13, 2026.
Yes — codecademy.com publishes p=reject, the strictest DMARC policy (as of July 13, 2026).