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”

References:

spamcop

• at URL https://www.spamcop.net/fom-serve/cache/19.html

has several examples of email programs, as does

fraudaid

• at URL http://fraudaid.com/find_headers.htm

of all places