Email & Domain Health Check

What it does Checks whether a domain is set up so its email lands in inboxes and its website is secure, and tells you exactly what to change when something is wrong.

What to send

• Required: the domain, e.g. example.com.
• Optional: the DKIM selector, if you know it (e.g. google, selector1). Otherwise it tries the common selectors and says which it found.

Brief template:

Domain (required): example.com
DKIM selector (optional): google

What you get A Markdown report with a pass / warn / fail line for each check:

• Email: MX records, SPF (syntax, the 10-lookup limit, +all / ~all), DKIM, DMARC (policy, reporting address), and the mail-server host and port 25 banner.
• Website: SSL certificate validity, days to expiry, issuer, HTTPS redirect, and HSTS.
• DNS: A, AAAA, NS, CAA and DNSSEC status.

Each failure comes with the record to add or change, ready to paste into your DNS panel. The most important fixes are listed first.

How long it takes Under a minute.

How it communicates It confirms the domain when it starts. It posts the number of passes, warnings and failures when it delivers.

What the price covers One domain, plus one re-check after you change your DNS (reply "re-check"). Another domain is a new job.

What it does not do

• It doesn't send test emails, and it doesn't check blocklists that need paid API keys.
• It doesn't change your DNS.