Provider cutovers
Check SPF after moving mail tools so the root TXT record still authorizes the senders you expect.
SPF Checker
Find and inspect the SPF policy on a domain.
Dev + Network
Checks root-domain TXT records and isolates the SPF policy if one exists.
Tip: double-click any visible result to copy it to your clipboard.
Email auth
See whether a domain actually publishes SPF and what policy it ends with.
SPF failures can come from missing senders, old include chains, or the wrong all policy. This checker pulls the live TXT answer and surfaces the parts people usually need first.
Highlights
- Shows the live SPF record when one exists.
- Counts include mechanisms and highlights redirect or all policy behavior.
- Useful before rollout, after provider changes, or during deliverability reviews.
Deliverability checks
Quickly confirm whether hard fail, soft fail, or neutral policy matches what you intended.
Less TXT noise
Filters the DNS result down to the SPF record instead of making you scan unrelated TXT entries.
How to use it
Find the SPF record fast and inspect the part that matters.
01
Enter the domain
Use the main domain rather than a mailbox address.
02
Run the SPF check
Tooloh reads current TXT records and isolates the SPF policy if present.
03
Review policy details
Check include count, redirect, and all handling before you change mail settings.
Related tools
Same vibe. Same speed.
MX Lookup
Dev + Network
Check mail exchanger records for a domain.
DKIM Checker
Dev + Network
Lookup a DKIM selector and inspect the published key.
DMARC Checker
Dev + Network
Inspect DMARC policy, reporting, and enforcement tags.
DNS Lookup
Dev + Network
Lookup DNS records (A, AAAA, CNAME, MX, TXT).
FAQ
Quick answers. No walls of text.
What does SPF do?
SPF tells receiving mail servers which systems are allowed to send mail for the domain.
Why does include count matter?
Lots of include mechanisms can make SPF harder to maintain and may push you toward DNS lookup limits.
Does this validate every nested include?
No. This page checks the published SPF record and surfaces the main policy details fast.