How to show fingerprint in email header?

[Daniel Kahn Gillmor]

On Thu 2017-06-08 22:05:40 +0900, Satoshi Yoshida wrote:
> How to show fingerprint in email header?
> I found
> https://datatracker.ietf.org/doc/draft-josefsson-openpgp-mailnews-header/
> But it is expired.

This is probably more of a question for your mail user agent than for
GnuPG, since GnuPG doesn't send mail.  What program do you use to send
mail?

Regards,

        --dkg
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