I try to convert to pdf with this following code found on the web ..

defun mu4e-action-save-to-pdf (msg) (let* ((date (mu4e-message-field msg :date)) (infile (mu4e~write-body-to-html msg)) (outfile (format-time-string "%Y-%m-%d%H%M%S.pdf" date))) (with-temp-buffer (shell-command (format "wkhtmltopdf %s ~/Desktop/%s" infile outfile) t)))) (add-to-list 'mu4e-view-actions '("Save to PDF" . mu4e-action-save-to-pdf) t) 

But when I launch the action it says ..

void function mu4e-write-body-to-html

When I "M-x mu4e-write" nothing exists ? Can somone tell me how to fix that. Thk

I try to convert to pdf with this following code found on Emacs SE:

(defun mu4e-action-save-to-pdf (msg) (let* ((date (mu4e-message-field msg :date)) (infile (mu4e~write-body-to-html msg)) (outfile (format-time-string "%Y-%m-%d%H%M%S.pdf" date))) (with-temp-buffer (shell-command (format "wkhtmltopdf %s ~/Desktop/%s" infile outfile) t)))) (add-to-list 'mu4e-view-actions '("Save to PDF" . mu4e-action-save-to-pdf) t) 

But when I launch the action it says:

void function mu4e-write-body-to-html

When I M-x mu4e-write<TAB> nothing exists. Can someone tell me how to fix that?