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Email infrastructure of coolors.co

According to Live Direct Marketing's daily DNS scan (July 13, 2026), coolors.co (Tranco rank #11,719) receives mail via Microsoft 365 and sends through Mailjet (Sinch), Zendesk. Its DMARC policy is p=quarantine — one of the minority (47%) of DMARC publishers that actually enforce.

Mailbox provider (MX)Microsoft 365
ESPs in SPFMailjet (Sinch), Zendesk
SaaS senders in SPFnone detected
DMARC policyp=quarantine
DMARC recordv=DMARC1; p=quarantine;
Tranco rank#11,719
Snapshot2026-07-13 (updated daily)

Frequently asked questions

What email provider does coolors.co use?

coolors.co 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.

What ESP does coolors.co use?

coolors.co authorises Mailjet (Sinch), Zendesk in its SPF record as of July 13, 2026.

Does coolors.co enforce DMARC?

Partially — coolors.co publishes p=quarantine (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 coolors.co at Gmail, Outlook, Yandex and Mail.ru.
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