E-Mail Header Analyzer
This tool analyzes and checks the header fields of an email and displays the results in a clear, easy-to-read format.
Notes:
- A blank line marks the end of the header.
- Multi-line header fields must start with at least one space or tab from the second line.
- The timestamps in the header are entered by the computer systems involved. Incorrectly set system clocks can lead to long or even negative delivery times.
- Received lines and some other header fields can be entered or falsified by the sender. Therefore, all information should be questioned and verified.
- The Received lines are analyzed automatically. Technical peculiarities can lead to warnings or incorrect information even when there is no actual problem.
- The actual sender cannot always be reliably determined from the headers. Information from email or internet providers may be necessary for this.
Tips:
Information on displaying the header in various email programs can be found on the page "Determine Email Headers".
Information about header fields and their analysis can be found on the page "Understanding Email Headers".
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