CDQ Guards · Email Domain Guard
Stop bad and fraudulent email data before it enters your systems
Email Domain Guard verifies email addresses and their domains through multi-factor checks and turns the results into a transparent, explainable risk score — for both batch cleansing and real-time decisions at the point of entry.
Trusted by global enterprises
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One score, every signal accounted for
Every check contributes to a single, transparent risk score you can route on and defend in an audit.
- 0–100
transparent, explainable Email Risk Score
- 5
risk tiers from very low to very high
- +100
risk points added for a disposable email
CDQ Guards
What Email Domain Guard does
A suite of specialized checkers and trust signals combine into one policy-driven engine, available in the Cloud App and as a REST API.
Multi-factor email & domain checkers
A suite of specialized checkers analyzes each address — format, domain existence, disposable and freemail detection, role category, WHOIS, DNSBL, and data-breach checks — with results normalized into consistent, explainable messages.
Email Risk Score
Translates checker outputs into a transparent 0–100 score across five classification tiers, with a factor-level explanation for every signal so decisions are comparable across teams and reviewable in audits.
EDG Configurator
A Cloud Apps workspace to create and manage reusable policies — enabling or disabling checkers, tuning weights and thresholds, and starting from a baseline template so strictness matches each process.
Cloud App + REST API
The same policy and scoring engine is available as an analyst-facing Cloud App and as a headless REST API (/emails/verify) secured by a CDQ API key, so ad-hoc verification and in-flow automation never drift apart.
Data Mirror & Storage Checker
Checks whether an email and its domain already appear in your Business Partner storages or raw sources such as D&B and BvD, returning references to matching partners and positively raising the trust score.
Sharing Pool Checker
For contributors to the CDQ Data Sharing Pool, confirms whether an email or domain is known to the community, returning matching references and adding a positive community trust signal to the score.
Why CDQ Email Domain Guard
Conventional email verification stops at syntax and simple lookups. Email Domain Guard goes deeper — and keeps working over time.
Depth beyond syntax and basic lookups
Format and simple domain checks let risky addresses stay in your database and fraud slip through. EDG combines deep risk scoring, threat intelligence, and ongoing revalidation in one service.
Integrated risk intelligence, not fragmented blacklists
EDG unites WHOIS, DNSBL, disposable and freemail detection, and breach signals with curated reference data into a single multi-factor analysis — no stitching tools together.
Lifecycle prevention, not one-off cleaning
EDG validates, enriches, and risk-scores at the point of entry and throughout the data's life, moving your teams from reactive cleaning to proactive prevention.
Transparent, auditable, community-backed
Every score carries factor-level explanations that hold up in audits, and Data Mirror plus Sharing Pool trust signals confirm good addresses using intelligence no single company could assemble alone.
How it works
Email Domain Guard runs inside your workflows, scoring each address and routing it by your policy — with a full audit trail.
Capture or change
A business user or API client submits an email when it is captured or changed, or before a critical action such as a vendor create, invoice submission, or payment approval. EDG runs the enabled checkers for the configured policy and returns a risk score with explanations.
Real time
Threshold evaluation
Process control compares the score to your policy thresholds to decide pass, manual review, or hold — for example auto-approve below 40, review 40–80, and block above 80.
Manual review
If routed for review, a reviewer inspects the checker messages and confirms or overrides the decision, adding an audit comment.
Save decision
The system of record persists the outcome, risk score, and rationale as an audit-ready log and syncs it downstream.
Frequently asked questions
What buyers ask before rolling out Email Domain Guard.
What is Email Domain Guard?
It is a CDQ Guard that verifies email addresses and their domains through multi-factor checks — format, domain existence, disposable and freemail detection, role category, WHOIS, DNSBL, and data-breach signals — and turns the results into a transparent 0–100 Email Risk Score across five tiers, with a factor-level explanation for every signal.
Who is it for?
Master-data and data-governance managers, risk and compliance leads, integration engineers, and marketing, sales, and finance teams at large multinationals who need email and domain data that is accurate, verified, and defensible across systems.
How does it integrate with our ERP, CRM, or SAP MDG?
The same engine is available as a Cloud App for ad-hoc verification and as a headless REST API (/emails/verify) secured with a CDQ API key. That lets you embed real-time verification at the point of entry in ERP, CRM, SAP MDG, onboarding platforms, and marketing automation, so batch and in-flow decisions stay consistent.
How do we stay in control of decisions and audits?
EDG proposes a score and routing recommendation — it never enforces. You set policy thresholds (for example auto-approve, review, or block), reviewers can confirm or override with a comment, and every outcome, score, and rationale is persisted as an audit-ready log traceable to its source and time.
How do we get started?
Book a demo with a CDQ expert. We run Email Domain Guard against your own email data, show you the scores and explanations, and map the policy and integration into your existing workflows.
Book a demo
See Email Domain Guard on your data
Book a demo with a CDQ expert and we will run Email Domain Guard against your own email data, walk you through the risk scores and explanations, and map the integration into your ERP, CRM, or onboarding flow.
Book your CDQ demo
Pick a 30-minute slot — see Email Domain Guard working on your own data.