Are your emails landing in spam? Could someone send email pretending to be you? Enter a domain or any email address, and we'll check the settings that decide both, in plain English, with what to fix.
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Want to see the raw records? DNS Lookup lists every record on the domain, including the ones this checker reads, with a note on what each does. Open DNS Lookup →Anyone can write any address in the "From" line of an email, the same way anyone can write any return address on an envelope. These settings are how mail providers like Gmail and Outlook tell real email from fakes.
SPF is a guest list: the services allowed to send email for the domain. DKIM is a tamper-proof seal on each message. DMARC tells mail providers what to do when a message fails both: let it through, send it to spam, or turn it away.
Since 2024, Gmail and Yahoo expect anyone sending a lot of email to have all three in place. Missing them is one of the most common reasons real email ends up in spam.
The optional extras are nice to have, not required. And a warning isn't always a problem: some providers use their own names for DKIM keys, so we can't always find them from the outside.
Free use is limited to 50 checks per day.