How to show Full Headers of an email message

You occasionally need to show full headers to debug spam or some malware attacks.

Unfortunately, the method to do this varies in every email program.

Here are some examples:

GMAIL (these things keep changing)

reply drop-down has “show original”

OUTLOOK: (these things keep changing)

message right-click has “options”



has several examples of email programs, as does


of all places

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