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Email Security Checker
Check SPF, DKIM and DMARC: why your emails land in spam, and whether others can send email pretending to be you.
Checking…
DNS records we found
Email Deliverability
Want your emails to land in the inbox?
We set up SPF, DKIM and DMARC for your email provider, website forms and newsletter tools, monitor the DMARC reports, and move you safely to full protection.
- Correct SPF, DKIM and DMARC for every service that sends for you
- DMARC reports reviewed, spoofing blocked step by step
- Works with Google Workspace, Microsoft 365, Zoho and Hostinger
What We Check
What this tool checks
The same records Gmail, Outlook and Yahoo look at before deciding: inbox or spam.
SPF
Whether it exists, is the only one, ends in ~all or -all, includes your provider and stays under 10 DNS lookups.
DKIM
Finds your signing key using common selectors (or yours) and checks its strength.
DMARC
Your policy (none, quarantine, reject), coverage and whether you receive reports.
Extras
Mail servers and provider, MTA-STS, TLS reporting and BIMI (your logo in Gmail).
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FAQs
Email security: questions
Prefer to talk it through? Our team in Thane West is happy to help.
Why do my business emails go to spam?
The most common reason is missing or broken SPF, DKIM or DMARC records. These DNS settings prove to Gmail, Outlook and Yahoo that an email really comes from your business. Without them, even genuine quotes and invoices can land in spam.
What are SPF, DKIM and DMARC in simple terms?
SPF is a list of the services allowed to send email for your domain. DKIM adds a digital signature to each email so receivers can check it wasn't faked or changed. DMARC tells receivers what to do when an email fails those checks, and sends you reports about who is using your domain.
Is DMARC required now?
Since 2024, Gmail and Yahoo require SPF, DKIM and DMARC from anyone sending a lot of email, and strongly prefer them for everyone. Starting with "p=none" is safe: it only monitors. Once reports show your real emails pass, move to "quarantine" to block spoofing.
What is a DKIM selector and where do I find it?
The selector is the name of your DKIM key, for example "google" for Google Workspace or "selector1" for Microsoft 365. Open any email you sent, view the original message or headers, and look for "DKIM-Signature" … "s=" followed by the selector.
Will changing these records stop my email working?
SPF and DMARC at p=none are safe to add. The risky changes are having two SPF records, forgetting to include a service that sends for you (like your website forms, CRM or newsletter tool), or jumping straight to p=reject. Check with this tool after every change.