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- Site check
Will your email arrive?
Type your site's address. The check reads the page for the email addresses it shows, then looks up the mail settings of the site's domain and of those addresses. You see whether mail to the business has somewhere to go, and whether mail from it can prove it is really yours.
Want it fixed?
Ask me
“Ask me to fix it” on any finding fills this in with that finding and the address you checked. Change anything you like; nothing is sent until you press Send, and I reply by email.
What it checks
What mail servers look up
Gmail, Yahoo and Outlook look up a domain's settings before they decide what to do with its mail. Those settings are public, so the check reads them the same way, for the site's own domain and for the domain of each address the page links to, four domains at most.
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Where mail goes
Whether the domain lists a mail server, and whose, and whether an address on the page belongs to a domain that exists and can take mail.
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SPF
The record that lists which services may send mail for the domain, and the mistakes that make mail servers treat it as broken, such as two records or more than 10 lookups.
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DKIM
Whether a signing key is published under the names the domain's mail provider uses. A key found proves mail can be signed; none found proves nothing.
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DMARC
The policy that tells mail servers what to do with mail that fails those checks, including the one a subdomain takes from its parent domain.
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A free mailbox
Whether the page includes a free mailbox, such as a Gmail address, where customers may take it for the business address.
What it cannot see
Inboxes, spam filters and other pages
The check reads public settings and the one page you name. It sends no message, so it cannot see whether mail lands in the inbox or in spam, and it misses addresses that appear only on other pages. A domain that takes no mail of its own is checked only for whether someone else could send mail as it.
Email is one section of the full site check, which runs them all at once with every problem in one list.