Ackuna Email Check

Check a website's email setup: SPF, DKIM, DMARC and MX graded in plain English, with the exact DNS record to fix each problem.

Click the icon on any website to see whether its email is set up properly. The extension checks SPF, DKIM, DMARC and MX, grades the domain from A to F and explains each result in plain English. It does not ask for access to any website. Each check gets its own card: Pass, Warn or Fail, one sentence on what that means, the record as it is published today, and a "How to fix" box with the DNS record to add. The fix is written for the mail provider the domain already uses (Google Workspace, Microsoft 365, Zoho, Proton, Fastmail and others), so it keeps the senders you already have. If the provider isn't one we recognise, you get a template with a clearly marked placeholder rather than a guess. Next to the grade you'll see the one thing to fix first. What each check looks at: • SPF: whether there is one record or several, the syntax, the include and redirect chain, how many DNS lookups it uses against the limit of 10, and whether it ends in +all, ?all, ~all or -all. • DMARC: the policy (none, quarantine or reject), the percentage, the subdomain policy, the reporting address, alignment, and whether the policy is inherited from the parent domain. • DKIM: tries 33 common selector names (google, selector1, k1, s1 and so on) plus any selector you enter, then reads the key and reports its size, revoked keys and testing flags. If none of the common names has a key, the card says "not verified" and the grade stays where it is. Amazon SES and Ackuna use random selectors, so enter yours to confirm. • MX: records by priority, null MX, whether the preferred server resolves, and which mail provider is behind it (Google Workspace, Microsoft 365, Zoho, Proton, Amazon SES inbound and more). Under the grade, "Ready to send through Ackuna?" lists the records Ackuna asks for when you add a domain (an SPF include, three DKIM CNAME records and a DMARC policy) and shows which ones the domain already has. You can type any domain or check the site you're on. Subdomains are trimmed to the main domain (shop.example.co.uk becomes example.co.uk) unless you turn that off in settings. The extension remembers your last ten domains, and "Copy report" puts the whole result on your clipboard as text you can paste into a support ticket. Privacy: the extension reads the current tab's address only when you click its icon. It never reads page content or your mail. DNS lookups go over HTTPS to Cloudflare or Google Public DNS, whichever you pick in settings. Ackuna's servers are not contacted unless you click one of the links to ackuna.com. There is no account, no sign-in and no analytics. Ackuna Email Check is made by Ackuna, an email platform for newsletters, transactional email and AI agents. The links lead to Ackuna's free email tools and a free account, but the checker works fully without either.