Only you should be able to email as you.
Email has no built-in way to prove who a message really comes from, so anyone can impersonate your domain to phish your staff, invoice your customers and trade on your good name. DMARCER shows you exactly who's doing it, and shuts the door.
The average domain scores just 14/100
From our live benchmark of 261,178,858 domains. Most of the internet is wide open to email spoofing. Find out where yours stands, free, in seconds.
Your data, in your region
DMARCER runs on dedicated infrastructure across eight regions worldwide (UK, Netherlands, US, Canada, South Africa, Singapore, Australia and Chile), so your data is processed close to home and stays in its jurisdiction.
The controls that decide
who can send as you
Email security isn't one switch: it's a handful of DNS controls working together. Here's what each one does, in plain terms. (We'll show you where your domain stands; fixing it is what the platform's for.)
SPF
The list of servers allowed to send on your behalf. Get it wrong and real mail bounces.
Learn moreDKIM
A cryptographic signature that proves a message really came from you and wasn't tampered with.
Learn moreDMARC
The policy that ties it together and tells the world what to do with fakes, plus the reports that reveal who's impersonating you.
Learn moreMTA-STS
Forces inbound mail to your domain over encrypted connections, so it can't be quietly intercepted.
Learn moreTLS-RPT
Reports when mail to your domain fails to arrive over an encrypted connection, your early warning that something is wrong.
Learn moreDNSSEC
Cryptographically signs your DNS so attackers can't forge the records your email security depends on.
Learn moreSee it. Fix it. Prove it.
One platform to monitor every domain you manage, fix what’s broken, and prove your posture against the real world.
Understand every failure
A verdict on every DMARC failure (spoofing, broken sender or false alarm) with an optional AI deep-dive.
Fix it, reversibly
Hosted SPF, MTA-STS and DKIM, plus one-click DNS remediation with preview and revert.
Prove your posture
A 0–100 score, benchmarked against your industry and country, tracked over time.
Show your security where customers can see it
Do the work, then prove it. The DMARCER Trust Mark is an embeddable badge that shows your domain’s live, independently-scored email-security grade, and anyone can verify it in a click. No other DMARC platform offers one.
See the Trust MarkWorks with your stack
DMARCER plugs into the tools you already run: your PSA for tickets, assets and billing, and your DNS provider for one-click fixes.
PSA and service desk
DNS providers, fixed in one click
See where your domain stands
No jargon, no homework. We'll show you exactly who can send mail as your domain today, and what's leaving you exposed.
Check your domain free Get a demo