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Free tool · RFC 7208
SPF Generator & Validator
List every service allowed to send email as you, without breaking the 10-lookup limit. Check your live record, see the full include tree and build a clean one in seconds.
- 10-lookup counter
- Full include tree
- Microsoft 365 & Google presets
Nothing you enter is stored. Checks only read public DNS; we never send email, contact your servers or keep a copy of your domain.
How it works
Three checks, one decision
Every email that claims to be from you is checked with SPF, DKIM and DMARC. Real mail passes and lands in the inbox. A fake one fails, and your DMARC policy blocks it.
Authentication
Authentication
Authentication
Best practice, your way
Free tools. Expert help when you want it.
The free tools get you started. Every new service that sends email changes your SPF, so let our specialists set up SPF, DKIM and DMARC to current best practice.
Free tools
Do it yourself, anytime
Includes
- SPF checker and generator
- DKIM and DMARC tools
- Email Security Checker with PDF report
Easy to miss on your own
- New services added without updating SPF
- Going over the 10-lookup limit
- Two SPF records after a provider change
SPF & DMARC Setup
Done for you, to best practice
Everything in Free, plus
- Every service that sends as you found
- SPF flattened safely under 10 lookups
- DKIM and DMARC set up to match
- Plain-English summary when done
Handled for you
- Every sending service listed correctly
- Lookup count checked before publishing
- Old and duplicate records removed
Managed Email Security
Looked after, month to month
Everything in Setup, plus
- SPF kept up to date as services change
- DMARC reports read and acted on
- Step-by-step move to p=reject
- Monthly plain-English report
Peace of mind
- SPF updated when you add a new service
- The 10-lookup limit watched for you
- One team to call when email changes
Keep going