dealing with html email programatically

[rrandresf@xxxxxxxxx (=?utf-8?q?Andr=C3=A9s_Ram=C3=ADrez?=)]

Hi guys.

I am trying to show notifications about new email (my email client is wanderlust), the notification
should include the first line on the body. So I need to convert html to
plain text programatically (html string is a variable).

My function is this one:
--8<---------------cut here---------------start------------->8---
(defun my/get-body-according-to-content-type (content-type-text-param my-message-body-string-param)
"dealing with html email on wanderlust
my/chomp does trim (remove blank space)"
(let ((my-content-type-list (split-string  content-type-text-param ";"))
      my-content-type-value my-content-type-second-arg)
  (setq my-content-type-value (my/chomp (car my-content-type-list)))
  (cond ((string-equal "text/plain" my-content-type-value)
         my-message-body-string-param
         )
        ((string-equal "text/html" my-content-type-value)
         (with-temp-buffer
           (insert my-message-body-string-param)
           (w3m-buffer)
           (buffer-substring-no-properties (point-min) (point-max))
           )
         )
        ((string-equal "multipart/alternative" my-content-type-value)
         (setq 
          my-content-type-second-arg (my/chomp (cadr my-content-type-list))
          my-content-type-second-arg (cadr (split-string  my-content-type-second-arg "\""))
          )
         (with-temp-buffer
           (insert my-message-body-string-param)
           (goto-char (point-min))
           (search-forward my-content-type-second-arg nil nil 2)
           (forward-char 1)
           (let ((beg (point))) (search-forward my-content-type-second-arg)(beginning-of-line) (forward-char -1)(copy-region-as-kill beg (point)))
           )
         (with-temp-buffer
           (insert (current-kill 0))
           (w3m-buffer)
           (buffer-substring-no-properties (point-min) (point-max))
           )         
         )
        ((string-equal "multipart/mixed" my-content-type-value)
         ; dealing with this later
         my-content-type-value
         )
        ))
  )
--8<---------------cut here---------------end--------------->8---

Is there a better function than w3m-buffer for my case?

BR