Free tool
SPF checker
Find a domain's SPF record and see which services are allowed to send email for it. Free, no sign-up.
Enter a domain to read its SPF record and count its DNS lookups.
What it checks
What this tool checks
Three things, every time you run it.
- 01
Finds the record
Reads the TXT record that starts with v=spf1, and flags a domain that has more than one.
- 02
Counts DNS lookups
Follows every include and redirect. More than 10 lookups breaks SPF for receivers.
- 03
Reads the policy
Tells you whether the record ends in -all, ~all, ?all or the unsafe +all.
Results
How to read the result
Every result comes with a plain reason.
One SPF record, under 10 lookups, with a clear policy.
The record works but is weak or close to the lookup limit.
No record, more than one record, or too many lookups.
Checking more than a few?
Upload a CSV and verify every address with all six checks. Start with 200 free credits.
FAQ
SPF checker questions
Short answers about this tool.
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Check your list before you send it
Start with 200 free credits. Pay per credit after that.