SPF, DKIM, DMARC & MX Checker by Mailyond

Check the MX, SPF, DKIM and DMARC records of the site you're on in one click. Free MX lookup and domain email checker.

Check the email setup of any website in one click. Open the site, click the Mailyond icon, and see its MX, SPF, DKIM and DMARC records checked side by side. What it checks - MX lookup: where the domain's mail goes, and whether it can receive mail at all - SPF checker: follows every include in the SPF record and counts the DNS lookups against the limit of 10 - DKIM checker: looks for keys at the common selectors and names the ones it finds - DMARC checker: reads the policy and tells you whether receivers are asked to reject mail that fakes the domain, send it to spam, or still deliver it Each check gets a pass, warning or fail label and one plain sentence on what it means. Need the details? "Full report" opens the matching free tool on mailyond.com with the domain already filled in: the MX record checker, SPF checker, DKIM checker or DMARC checker. You can edit the domain before you check it, for example to look at example.com instead of app.example.com. Useful when you set up email on a new domain, when mail lands in spam, or when you want to see how a client or vendor has set up theirs. One SPF DKIM DMARC checker instead of four tabs. Privacy - The extension reads the address of the current tab only when you click its icon - Only the domain is sent to mailyond.com, which runs the DNS lookups - No account, no tracking, nothing sold Made by Mailyond, which lets you send and answer email across all your domains, from $10/month.