Migrate from NCSC Mail Check
NCSC has confirmed that Mail Check is being retired because “better commercial options now exist.” ShieldMarc is a UK-built DMARC monitoring platform designed as a direct replacement. Migrate in under 5 minutes.
What happens when Mail Check shuts down?
Your DMARC RUA reports will stop being processed. You will have no visibility into who is sending email as your domain, whether your authentication is working, or whether spoofing campaigns are targeting you. Your DMARC policy still works, but you are flying blind.
ShieldMarc vs NCSC Mail Check
Everything Mail Check did, plus the features NCSC said commercial tools do better.
| Feature | NCSC Mail Check | ShieldMarc |
|---|---|---|
| DMARC aggregate report parsing | ||
| Human-readable dashboards | ||
| SPF & DKIM validation | ||
| Subdomain policy (sp=) detection | ||
| AI-powered threat classification | ||
| NCSC Mail Check migration detection | ||
| SSL/TLS certificate monitoring | ||
| DNS, DNSSEC & CAA monitoring | ||
| MTA-STS & TLS-RPT monitoring | ||
| Domain expiry & WHOIS monitoring | ||
| Uptime monitoring | ||
| Lookalike domain detection | ||
| Actionable remediation tasks | ||
| Scheduled email reports | ||
| Security Grade score | ||
| UK company, EU-hosted infrastructure | ||
| Free tier available |
Migrate in 3 steps
Create your free account
Sign up and add your domain. ShieldMarc generates your unique RUA reporting address instantly.
Update your DMARC record
Replace the NCSC Mail Check RUA address in your DNS with the ShieldMarc address. One DNS TXT record change.
Reports start flowing
Within 24-48 hours, DMARC aggregate reports from receiving servers will appear in your ShieldMarc dashboard.
NHS, public sector, and local authorities
ShieldMarc is a UK company with EU-hosted infrastructure. For public sector and enterprise customers requiring UK data residency, we offer dedicated UK-hosted environments on request. We understand the specific challenges facing organisations migrating from NCSC Mail Check, including managing hundreds of subdomains, compliance requirements, and limited IT resource. We offer dedicated onboarding support and volume pricing for public sector customers.
Contact us for public sector pricingDon't wait until your reporting goes dark
Start your free account today and have your DMARC monitoring migrated before Mail Check shuts down.
Free tier includes 1 domain and 10,000 messages/month. No credit card required.
Frequently asked questions
- Why is NCSC retiring Mail Check?
- NCSC has stated that the commercial DMARC monitoring market has matured and that better options now exist. They are refocusing resources on areas where commercial solutions are not yet available.
- Will my DMARC policy stop working?
- No. Your DMARC policy (p=reject, p=quarantine, etc.) is a DNS record that receiving servers enforce independently. It will continue working. What stops is the reporting - you will no longer receive aggregate reports telling you what is happening with your email authentication.
- How long does migration take?
- Under 5 minutes. You create an account, add your domain, and update the RUA address in your DMARC DNS record. Reports typically start arriving within 24-48 hours.
- Is ShieldMarc free?
- Yes, the Starter plan is free and includes 1 domain with 10,000 messages per month and AI threat analysis. For organisations managing multiple domains, Professional (25 domains) and MSP (100+ domains) plans are available.
- Where is ShieldMarc hosted?
- ShieldMarc is a UK company with infrastructure hosted in the EU. For enterprise and public sector customers requiring UK data residency, we offer dedicated UK-hosted environments as part of a custom plan. Contact us to discuss your requirements.
- Can I keep my existing RUA address alongside ShieldMarc?
- Yes. DMARC supports multiple RUA addresses separated by commas. You can add ShieldMarc alongside any existing reporting address. We recommend removing the NCSC Mail Check address once it stops processing reports.