Email diagnostic
DKIM selector lookup
Look up a selector's public key and inspect its advertised DKIM parameters.
What you’ll learn
Verify that the sending service's public signing key is visible.
Live diagnostic
Server guardedSet the target
Transparent facts, not a magic score.
Every measurement is timestamped and tied to its provider. Component timings remain separate, provider errors stay visible, and paid fallback is disabled by default.
Inputdomain + selector
Executionserver
Default cost$0 provider spend
Timeout8 seconds