Generating date/time stamps

[Jean Louis]

The problem with programmatic usage of `mail' is that it will not
automatically generate the time stamp. That means if I am saving or
recording it into ~/Maildir/recipient@example.com the later review of
sent emails will show that emails without date appear first but should
appear last.

Problem can be solved by adding the date to headers. I do wish to tell
what is the time zone from where email has been sent. 

Do you think that following is good enough?

(defun rcd-timestamp-email ()
  "Return timestamp suitable for email."
  (format-time-string "%a, %e %B %Y %T %z" nil 'wall))

(format-time-string "%a, %e %B %Y %T %z" nil 'wall) ⇒ "Mon,  7 June 2021 
14:52:07 +0300"

Another problem is that locale could change it to other language, I
will have to fix it maybe to English locale in Emacs.

Reference:
https://datatracker.ietf.org/doc/html/rfc2822#section-3.3


Jean

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