13.7.3 User-Agent Field

If you are eccentric enough to elaborate `X-Mailer:' or `User-Agent:' fields, define a function that generate appropriate strings as you like, and set it to variable wl-generate-mailer-string-function.

If you do not want verbose `User-Agent:' field, do the following:

(setq wl-generate-mailer-string-function
      'wl-generate-user-agent-string-1)

The following is a example:

(setq wl-generate-mailer-string-function nil)
(setq wl-draft-additional-header-alist
      (list
       (cons 'X-Mailer (lambda () (product-string-1 'wl-version)))))