Make mu4e use helm as a completion read function

configuration.org

@@ -2226,6 +2226,7 @@ Then configure ~real-auto-save-mode~
 
 #+BEGIN_SRC emacs-lisp
 (use-package mu4e
+  :after helm
   :ensure nil
   :config
   (require 'org-mu4e)
@@ -2261,8 +2262,10 @@ Then configure ~real-auto-save-mode~
                      (mu4e-drafts-folder . "/[Gmail].Drafts")
                      (mu4e-trash-folder . "/[Gmail].Trash")
                      (mu4e-refile-folder . "/[Gmail].Drafts"))))
-        mu4e-context-policy 'pick-first
         org-mu4e-link-query-in-headers-mode nil)
+  :custom
+  (mu4e-completing-read-function 'helm-comp-read)
+  (mu4e-context-policy 'pick-first)
   :bind
   (:map gpolonkai/pers-map
    ("m m" . mu4e)