About
A small product that does one thing: keeps an SPF record small and correct, and keeps it that way when your providers change.
Last updated 2026-08-01
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What this is
SPF has a hard limit of ten DNS lookups, and a handful of ordinary services — business email, a marketing tool, a CRM, a helpdesk — will use all of them. Past the limit, receivers return permerror and legitimate mail starts being rejected. Nothing in your DNS changed; a provider added an include to a record you do not control.
We resolve all of it, publish it as one include you point at, and keep it in step. That is the whole product. DKIM and DMARC are not part of it today.
What we deliberately do not do
- We do not touch your DNS. You publish one record, once, yourself.
- We do not remove an authorized address on your behalf without your approval, on any plan.
- We do not sell or share what we learn. The reports are public because DNS is public; nothing about you is.
- We do not hold your original record hostage. It is in your dashboard, permanently, and leaving takes about thirty seconds.
Who runs it
Company details are being registered. Once they are, they appear here and on every legal page — for a product this small, being findable is worth more than looking large.
Questions go to privacy@flat-spf.com and are answered by the person who wrote the thing you are asking about.
Related
How it is built and what happens when it fails · What happens if we disappear · Data processing agreement