toolsko

Choose your language

ToolsKo is written in English. Prefer another language? Open a translated version of this public page.

Browser language suggestion: English. You can choose any language below.

Translation opens in a new tab using Google Translate. It receives this public page URL. Automatic translations may contain mistakes; use the original English page for tool inputs, downloads, and generated documents.

Your choice is remembered on this browser when storage is available. Use Language in the header to change it.

Email Header Parser

Unfold and inspect pasted email header fields.

Tool inputs stay in your browser · optional AI search sends your query

Good to know: Parses header syntax and folded lines only. Does not verify SPF, DKIM, sender identity or delivery authenticity. Headers can contain personal addresses and IPs; processing stays in your browser.

How to use it (step by step)

  1. 1Type or paste your text into the “Input” box. There is already an example in it so you can see how it works; press Clear to start with your own.
  2. 2The answer appears right away in the “Result” box. No button needed.
  3. 3Press Copy and paste the result wherever you need it.

Words to know

Email header
Hidden technical lines at the top of an email showing where it came from and how it traveled.
SPF, DKIM, DMARC
Email security settings in DNS. SPF lists who may send for your domain, DKIM adds a digital stamp, DMARC tells receivers what to do with fakes.

More in Developer

ADB / Android Platform Tools — Download & GuideConnect an Android phone to your computer to test apps and check its connection status.Android Emulator — Virtual Phone SetupTest an Android app on a virtual phone on your computer, even without a physical phone.Android Logcat — Find App ErrorsRead your app’s activity diary to find out what happened before an error or sudden shutdown.Android Profiler — Check Slow AppsCheck whether your app uses too much processing power or memory while it runs.Android APK Analyzer — Inspect App SizeLook inside an APK or Android App Bundle to find which files make your app large.scrcpy — Mirror & Control Android on PCDisplay and control your Android screen on a computer for app demonstrations and testing.