smtptest.dev
Appeared in the .dev zone on Wednesday, October 21, 2026; by the end of that day the census found active website about hosting & domains. Full domain report
Signals, not verdicts. A domain appears here because heuristics matched its name, its infrastructure or the page it served on its first day. Where a model has looked at it, that is shown as an opinion with a confidence, not as a finding. Nothing on this page says a site is malicious. Read the evidence and decide for yourself.
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What matched
Model opinions
The page is a self-branded 'SMTP Test' diagnostic tool. It lists Gmail, Outlook, Microsoft 365 and other providers only as presets, with accurate host and port settings, and uses no provider logos or account-portal language, so the scorer's Microsoft 365/Outlook brand hits are false positives. The password field is inherent to an SMTP login test and comes with a no-storage notice, a Cloudflare Turnstile check and GitHub links, a common legitimate utility genre, though any tool collecting mail pa
This is a legitimate SMTP testing utility tool with its own branded interface and clear educational purpose. While it references Microsoft 365, Gmail, Outlook and other providers in dropdown menus and documentation, it does not impersonate any of them—it explicitly helps users connect to those services' real SMTP servers (smtp.office365.com, smtp.gmail.com, smtp-mail.outlook.com, etc.). The form accepts custom SMTP credentials for testing and explicitly states passwords are not stored. The tool
A model looked at the screenshot and page text and wrote what it thought. It can be wrong, and it is not a finding.
What the page looked like on Wednesday, October 21, 2026
Same data as JSON: /api/zone/domain/smtptest.dev. This page is not indexed by search engines and does not link to the site it describes.