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According to Live Direct Marketing's daily DNS scan (July 13, 2026), insider.com (Tranco rank #5,392) receives mail via Google Workspace and sends through SendGrid (Twilio). Its DMARC policy is p=reject — one of the minority (47%) of DMARC publishers that actually enforce.
| Mailbox provider (MX) | Google Workspace |
|---|---|
| ESPs in SPF | SendGrid (Twilio) |
| SaaS senders in SPF | Tipalti, Atlassian (Jira/Confluence) |
| DMARC policy | p=reject |
| DMARC record | v=DMARC1; p=reject; rua=mailto:dmarc-reports@insider.com; ruf=mailto:dmarc-reports@insider.com; |
| Tranco rank | #5,392 |
| Snapshot | 2026-07-13 (updated daily) |
insider.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.
insider.com authorises SendGrid (Twilio) in its SPF record as of July 13, 2026.
Yes — insider.com publishes p=reject, the strictest DMARC policy (as of July 13, 2026).