Free tool
SPF Record Checker
Paste your SPF record and we'll check it for syntax issues, the 10-lookup limit risk and a missing all mechanism — without any DNS access.
How it works
- 1Paste your SPF TXT record (starts with v=spf1).
- 2We lint it for common problems.
- 3Fix issues that hurt your authentication.
Questions
Frequently asked
What is SPF?
Sender Policy Framework lists which servers may send email for your domain. Receivers use it to detect spoofing.
What breaks SPF most often?
More than 10 DNS lookups, multiple SPF records on one domain, or a missing ~all / -all at the end.
Can I check a whole list at once?
This free tool checks one at a time. To verify a full list — email, phone and company together — upload a CSV to BounceBlock and preview your first 100 rows free.
Stop wasting hours on dead leads.
Upload your list and see how clean it really is — free, in under two minutes.
100 free creditsNo credit cardCancel anytime