Can anyone send email as your domain?
Type a domain. We check it from the outside — the way a customer or an attacker sees it — and tell you what we find. Four things that all carry a date and all change without telling anyone: whether mail can be forged in your name, when your HTTPS certificate expires, when your domain registration renews, and whether the site actually answers. No signup. No email address. Nothing to install.
We check only what is published publicly in DNS and served on the public internet. Free checks are limited per visitor.
We ran this same check across 604 Canadian small-business domains and published what came back: 69.7% of 522 agency-built sites and 80.7% of an independent 83-domain sample had no enforcing DMARC policy. Read the data, method and limitations →
Fixing it is the easy part. Knowing when it breaks again is not.
Every item above is fine right up until the day it is not, and a one-time check cannot catch the day. The A3E Perimeter Monitor re-runs this every month and tells you what changed — so an expiring certificate, a lapsing domain or an edited DNS record reaches you before it reaches your customers. CA$99/month per site. Cancel from any report.
Start monitoring — CA$99/mo →Not ready for a subscription? Buy the full report once — CA$29.
The four checks above stay free. What CA$29 adds is the rest of the document a subscriber gets, emailed to you within one business day: which AI assistants your robots.txt admits, whether your server actually serves them when they call, whether your markup is machine-readable, and whether you appear for the searches your buyers type. It does not include the month-over-month comparison — that is the part a single report cannot have, and it is the reason the monitor exists. One payment, no subscription, no further charge.
Buy the one-time report — CA$29 →Or read everything the monitor covers first, including the 3-site plan →
Not deciding today? Have this report emailed to you.
One email, with everything above written out — the records, the dates and what each one means. Whoever manages your DNS can act on it without running anything themselves, so forward it to them. We send it once. You are not added to a list and there is nothing to unsubscribe from.