Folderly Flash Send-readiness test Have Folderly fix this
Free Folderly Flash score · powered by Folderly

Copy the address. Send your email. Know if it is ready.

No signup, no email gate, no credit card. Send from the actual tool and domain you plan to use; Flash returns a deterministic setup grade now and live inbox placement only when seed inboxes report.

1Copy the test address
2Send the email you plan to use
3Read the free verdict here
Your free test address

Send a real campaign draft or reply template. The score appears on this page when processing finishes.

No signup
flash-tjlctktc@flash.folderly.com
Free score visible here Deterministic checks No LLM scoring
Want your real inbox placement across Gmail?
Send your email to all of these in one message — we'll show where you land in each configured seed inbox:
flash-tjlctktc@flash.folderly.com, flash.seed.001@gmail.com, flash.seed.001@folderly.com
Send to just the Flash address instead → instant setup grade, no placement proof.
Waiting for your email…
3 free tests remaining today on this IP
How we score · SLA < 30 seconds

Why this exists

Mail-tester.com hasn't materially changed since 2012. We rewrote the primitive — same 30-second loop, but on a real seed-inbox network with a remediation path one click from Folderly's engineering bench.

The verdict, not a checklistWe tell you what Gmail & Yahoo conclude about your sender identity — enforcement-readiness, not "SPF present ✓".
DeterministicSame email → same score within ±3 points. No LLM in the scoring path.
Sender-verifiedPublic score URLs require domain ownership. No spoofed-From defamation.
Folderly-powered fixesOne click to engineering remediation. The handoff is the product.

Pricing

Free
$0
3 tests per IP per day
  • Score + top fixes
  • Public share URL (verified)
  • No signup · ever
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  • Full forensic breakdown
  • Every header explained
  • Remediation copy
  • 7-day refund · no questions
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  • Unlimited tests
  • REST API + OpenAPI
  • Multi-domain history
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