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Email infrastructure of which.co.uk

According to Live Direct Marketing's daily DNS scan (July 13, 2026), which.co.uk (Tranco rank #9,760) receives mail via Mimecast and sends through Mimecast, Salesforce, Amazon SES. Its DMARC policy is p=quarantine — one of the minority (47%) of DMARC publishers that actually enforce.

Mailbox provider (MX)Mimecast
ESPs in SPFMimecast, Salesforce, Amazon SES, Salesforce Marketing Cloud
SaaS senders in SPFnone detected
DMARC policyp=quarantine
DMARC recordv=DMARC1; p=quarantine; pct=100; rua=mailto:2ac5faf1c2ce657@rep.dmarcanalyzer.com; ruf=mailto:2ac5faf1c2ce657@for.dmarcanalyzer.com; fo=1;
Tranco rank#9,760
Snapshot2026-07-13 (updated daily)

Frequently asked questions

What email provider does which.co.uk use?

which.co.uk uses Mimecast 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 which.co.uk use?

which.co.uk authorises Mimecast, Salesforce, Amazon SES, Salesforce Marketing Cloud in its SPF record as of July 13, 2026.

Does which.co.uk enforce DMARC?

Partially — which.co.uk 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 which.co.uk at Gmail, Outlook, Yandex and Mail.ru.
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