Question 1

Is the SPF analyzer free?

Accepted Answer

Yes. Analyzing a domain's SPF record is free and doesn't require an account or email address.

Question 2

What does the SPF analyzer check?

Accepted Answer

It parses the domain's published SPF record, counts DNS lookups against the RFC 7208 10-lookup limit, evaluates the enforcement mechanism (-all, ~all, ?all or +all), detects known email providers referenced in includes, and flags deprecated mechanisms like PTR or an open +all policy.

Question 3

Does analyzing a domain change anything in its DNS?

Accepted Answer

No. The analyzer only reads the existing public SPF TXT record — it never writes or modifies anything, and works on any domain, not just ones you own.