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SPF Generator
Generate a valid SPF TXT record for your domain by picking your sending services. Avoid common syntax mistakes.
This tool is being wired up. The analyzer ships in the next build phase.
About this check
Build a clean SPF record from your sending services.
Frequently asked questions
- What does the SPF Generator actually check?
- Build a clean SPF record from your sending services.
- Is this really free?
- Yes. Every on.bo tool is free, no signup required, no rate-limit tricks.
- Do you store the data I check?
- We log minimal metadata to keep the service healthy. Lookups themselves are not retained beyond short-term caching.