SPF Generator Tool

Build a custom SPF (Sender Policy Framework) record for your domain. All logic runs in your browser.

Allowed Senders
Allowed IPs
Policy for Non-Compliant Mail
What is SPF?

SPF (Sender Policy Framework) is a DNS TXT record that helps prevent email spoofing by specifying which mail servers are allowed to send email for your domain.

How do I use this record?

Copy the generated SPF record and add it as a TXT record for your domain in your DNS provider's control panel.

Tips for a good SPF record
  • Only include trusted senders and IPs.
  • Use -all for strict enforcement, ~all for testing.
  • SPF records must be under 255 characters per string; long records may need to be split.