Free Email Infrastructure Diagnostic

Enter your sending domain. See your authentication and blacklist status instantly. Then send us a test email for per-provider inbox placement analysis.

1 Check your sending domain

Your Email * (we send results here)

Sending Domain *

I agree to the Privacy Policy and consent to receiving diagnostic results and related communications. You can unsubscribe at any time.

Your sending domain may differ from your company website. Enter the domain in your From: address or DKIM signatures. You can run multiple checks.

2 Send us a test email

Send a test email from your sending infrastructure to all 4 addresses

This is the most valuable part of the diagnostic. From your test email we extract:

DKIM selectors and signature verification
SPF alignment (envelope vs header From:)
Full authentication chain (ARC, DKIM, SPF pass/fail per provider)
Routing path and sending IP addresses
Inbox vs spam placement at Gmail, Microsoft, and Yahoo

Reputation varies by provider. Gmail may show "Low" while Microsoft shows "Green". The test email reveals the full picture.

datainnovation9@gmail.com Gmail / Google Workspace inbox placement

datainnovation9@hotmail.com Microsoft (Outlook, Hotmail, Live) inbox placement

datainnovation9@yahoo.com Verizon (Yahoo, AOL) inbox placement

sendability-test@datainnovation.io Full header analysis + sending IP extraction

3 Get your full report

20+ years operating enterprise email infrastructures. Your diagnostic is free and we respond within 24 hours.

“The deliverability improvements were immediate and measurable. Sendability gave us visibility into our email performance that we never had with our previous provider.”

Juan Carlos Murillo Garcia, CRM Data Specialist, Nestle