Providers/DuckDuckGo Email Protection
DuckDuckGo Email Protection
DuckDuckGo Email Protection issues @duck.com aliases that forward to a private address.
Duck.com aliases are usually privacy-motivated. Treat email_relay as a soft signal unless your policy blocks all relays.
Example domains
Public domains commonly associated with DuckDuckGo Email Protection. ShieldSignup coverage is broader (marketing: 94,000+ disposable domains) — this page lists examples only, not every domain the provider may use.
- duck.com
Block with ShieldSignup
Call POST /v1/assess with the signup email. For known domains of this type, expect reason code email_relay and signals.email.relay_domain: true.
curl -sS -X POST https://www.shieldsignup.com/v1/assess \
-H "Authorization: Bearer sk_live_…" \
-H "Content-Type: application/json" \
-d '{"email":"user@duck.com","ip":"203.0.113.10"}'Related providers
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