MX
Where mail goes
The MX record tells the world which servers receive mail for your domain. Without it, replies have nowhere to land.
Free email deliverability check
Check if your emails might land in spam.
Enter your domain and we'll read its public mail records. You'll see what could send your email to spam, and what could let someone impersonate you.
We only look up public DNS records. We don't send email or store your domain.
0
domains scanned in our audit
0%
had at least one email-authentication gap
0
without a DMARC policy that blocks spoofing
Where the money goes
Estimate what spam costs you.
If you pay for cold outreach, every email that lands in spam is a cost with no return. Enter your own numbers below. The inbox rate is your estimate, so change it to match what you see.
Spent on emails that never reach an inbox, per month
$0
Same spend, per year
$0
This is a simple estimate: emails sent × cost per email × the share that doesn't reach an inbox. It doesn't include lost replies or deals.
01 · What inboxes check first
Four settings decide if your emails get trusted.
Every email you send is checked against these settings before a person ever sees it. If one is wrong, your message can go to spam, and the money you spent sending it is gone.
SPF
Who may send
SPF is a TXT record listing the servers allowed to send for your domain. Receivers compare the sending server against that list.
DKIM
Proof it wasn't changed
Outgoing mail is signed with a private key. The public key sits in DNS, so anyone can verify the signature.
DMARC
What to do when checks fail
DMARC ties SPF and DKIM to the visible From address and tells receivers to monitor, quarantine, or reject failures.
02 · Where your emails can get lost
What happens between send and inbox.
Tap each stop to see where a campaign can quietly lose its audience.
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Your mail client hands the message to an outgoing server, which signs it with your DKIM key.
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It fetches your SPF, DKIM and DMARC records. A missing or broken record leaves it guessing.
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Sending server, signature and From address are compared. Passing all three builds trust.
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Reputation, content and engagement history push the message one way or the other.
03 · Why outreach lands in spam
Usually more than one small thing.
Spam filters score each email. Every cause below lowers that score, and every lost placement is a paid send that nobody reads.
Missing authentication
No SPF, DKIM or DMARC gives receivers nothing to verify. Many mailbox providers now require them from bulk senders.
Broken SPF records
Two SPF records, or more than ten DNS lookups, make the check fail as an error. Legitimate mail gets treated as suspicious.
DMARC on monitor-only
p=none reports spoofing but doesn't stop it, so anyone can send mail that appears to come from your domain.
Complaints and bounces
High spam-complaint or bounce rates, usually from old or purchased lists, damage sender reputation quickly.
A new, unwarmed domain
Sending large volumes from a domain with no history looks like a spam run. Volume should ramp up gradually.
Content and links
Image-only messages, link shorteners and aggressive wording can raise scores. They rarely cause spam on their own.
04 · Our audit
What we found in 2,088 domains.
We checked the public DNS records of small US businesses that send email through Google Workspace or Microsoft 365. This is a sample, not a census, and a flagged record is a configuration finding rather than proof of spam placement.
70%
flagged at least once
1,469 domains had one or more authentication issues.
38
with multiple SPF records
Mail servers treat more than one SPF record as an error.
653
rated critical
Missing or invalid DMARC on a domain that sends email.
Protect the money you put into outreach.
Cold outreach only pays off if the emails reach a real inbox. Fixing these settings is the cheapest part of the campaign.
Email us your domain