Know exactly who is sending email as your domain.
DMARC Defence reads the reports that Google, Microsoft and Yahoo send about your domain, and turns them into a plain-English weekly Shield Report. You see which services are sending on your behalf, which ones need fixing, and who might be spoofing you.
Add one DNS record
Point your domain's DMARC reports to us. It takes a couple of minutes and doesn't touch your regular email.
We read the reports
Mailbox providers send us daily reports. We decode them and match every sender to the service behind it.
Get a clear Shield Report
Every week: what's working, what needs attention, and exactly what to do about it.
Questions, answered simply
No technical knowledge needed.
What is DMARC?
When you send a letter, you can write any return address on the envelope, and nobody checks. Email works the same way: anyone can type your email address in the "From" line of a message.
DMARC is a way to tell the world how to check whether an email really came from you, and what to do with the ones that fail. It also asks the big email companies, like Google, Microsoft and Yahoo, to send you a daily report about who is sending email using your name.
Why does it matter to me?
It protects your name. Criminals can send fake emails that look like they came from your business. Your customers might pay a fake invoice or click a harmful link, and they will blame you.
It helps your real email get delivered. Email companies trust you more when this is set up, so your messages are less likely to land in spam.
Do I need to be technical?
No. There is one small step: adding a single line of text to your domain's settings. We give you the exact text to copy, and you can forward it to whoever looks after your website. After that, you just read the results in plain English.
Will it change or break my email?
No. Setting up reports does not change what happens to your email. Nothing is blocked or delayed. It only collects information, and any change that could affect delivery is a separate choice that only you make.
Can you read my emails?
No. The reports contain no email content at all: no subjects, no messages, no attachments and no recipient addresses. They only contain totals, like "a server sent 40 emails using your domain name, and 38 passed the checks."
How long until I see results?
Usually one to three days after setup. Email companies send their reports once a day, after the day is over, so there is nothing to show on day one.