Do your emails land in spam?
Enter the domain of your shared address. We read its MX, SPF, DKIM and DMARC records and tell you, in plain words, what to fix with Google Workspace, Microsoft 365 or your host.
- Free, no signup
- Public DNS records only
- Nothing is kept
Your domain
The reading appears here: four checks, each with what it means and what to change.
What this checker reads:MX, SPF, DKIM, DMARC
Once your mail gets through, who answers it?
Trupeo plugs into the address your team already shares. Everyone sees who is on each email, what is done leaves the list, and the team leaves itself notes beside the email.
Try free for 30 days- No credit card
- Keep your address and your emails
- From €10 a month per mailbox, excl. VAT
In Trupeo
What this checker reads
It asks public DNS servers for four kinds of records on your domain, the same ones any mailbox reads when your mail arrives. Nothing is sent to your address and nothing is kept: neither the domain nor the result.
SPF, DKIM and DMARC in a few words
- Why do emails from our shared address land in spam?
- Most often because the domain does not prove that the mail is really from it. Gmail and Outlook check three records: SPF (which servers may send for the domain), DKIM (a signature on each mail) and DMARC (what to do when both fail). When they are missing or wrong, the mail looks like it could be a fake, and it goes to spam or is refused.
- What is an SPF record?
- A TXT record on your domain that lists the servers allowed to send mail in its name, for example v=spf1 include:_spf.google.com ~all for Google Workspace. A domain must have exactly one, and it must not need more than 10 DNS lookups.
- What is DKIM?
- A signature your mail provider adds to every mail it sends, checked against a public key published in your DNS under a name like google._domainkey or selector1._domainkey. It proves the mail was not changed on the way and really comes from your domain.
- What is DMARC, and which policy should we choose?
- A TXT record named _dmarc that tells receivers what to do with mail that fails SPF and DKIM: nothing (p=none), spam (p=quarantine) or refuse (p=reject). Start with p=none and a reporting address, then move to p=quarantine once the reports show your own mail passes.
- Do Gmail and Outlook really require it?
- Gmail asks every sender for SPF or DKIM, and asks those sending more than 5,000 mails a day for SPF, DKIM and DMARC. A small team sends far less, but the same checks decide whether its replies are trusted.
Sources: Gmail Help: Email sender guidelines · Google Workspace Help: Set up DKIM · Microsoft Learn: Set up SPF · Microsoft Learn: How to use DKIM · Microsoft Learn: Set up DMARC · RFC 7208: Sender Policy Framework