diff --git a/mu4e/mu4e-icalendar.el b/mu4e/mu4e-icalendar.el
index 30feb51c..82a18f8e 100644
--- a/mu4e/mu4e-icalendar.el
+++ b/mu4e/mu4e-icalendar.el
@@ -66,10 +66,10 @@
   "Icalendar related settings."
   :group 'mu4e)
 
-(defcustom mu4e-icalendar-trash-after-reply nil
-  "If non-nil, trash the icalendar invitation after replying."
-  :type 'boolean
-  :group 'mu4e-icalendar)
+;; (defcustom mu4e-icalendar-trash-after-reply nil
+;;   "If non-nil, trash the icalendar invitation after replying."
+;;   :type 'boolean
+;;   :group 'mu4e-icalendar)
 
 (defcustom mu4e-icalendar-diary-file nil
   "If non-nil, the file in which to add events upon reply."
@@ -142,11 +142,12 @@
               (mml-insert-empty-tag 'part 'type "text/plain")
               (mml-attach-buffer ical-name
                                  "text/calendar; method=REPLY; charset=UTF-8")
-              (when mu4e-icalendar-trash-after-reply
-                ;; Override `mu4e-sent-handler' set by `mu4e-compose-mode' to
-                ;; also trash the message (thus must be appended to hooks).
-                (add-hook 'message-sent-hook
-                          (mu4e--icalendar-trash-message-hook msg) 90 t))
+              ;; XXX: not currently supported
+              ;;(when mu4e-icalendar-trash-after-reply
+              ;;   ;; Override `mu4e-sent-handler' set by `mu4e-compose-mode' to
+              ;;   ;; also trash the message (thus must be appended to hooks).
+              ;;   (add-hook 'message-sent-hook
+              ;;             (mu4e--icalendar-trash-message-hook msg) 90 t))
 
               (when gnus-icalendar-org-enabled-p
                 (if (gnus-icalendar-find-org-event-file event)
@@ -175,11 +176,11 @@
         (or (mu4e-view-headers-next)
             (kill-buffer-and-window))))))
 
-(defun mu4e--icalendar-trash-message-hook (original-msg)
-  "Trash the iCalendar message ORIGINAL-MSG."
-  (lambda ()
-    (setq mu4e-sent-func
-          (mu4e--icalendar-trash-message original-msg))))
+;; (defun mu4e--icalendar-trash-message-hook (original-msg)
+;;   "Trash the iCalendar message ORIGINAL-MSG."
+;;   (lambda ()
+;;     (setq mu4e-sent-func
+;;           (mu4e--icalendar-trash-message original-msg))))
 
 (defun mu4e--icalendar-insert-diary (event reply-status filename)
   "Insert a diary entry for the EVENT in file named FILENAME.
diff --git a/mu4e/mu4e-obsolete.el b/mu4e/mu4e-obsolete.el
index c040e1ab..58362871 100644
--- a/mu4e/mu4e-obsolete.el
+++ b/mu4e/mu4e-obsolete.el
@@ -229,6 +229,7 @@
 
 (make-obsolete-variable 'mu4e-header-func "mu4e-headers-append-func" "1.7.4")
 (make-obsolete-variable 'mu4e-temp-func "No longer used" "1.7.0")
+(make-obsolete-variable 'mu4e-sent-func  "No longer used" "1.12.5")
 
 
 ;; mu4e-update
@@ -276,6 +277,9 @@
 (define-obsolete-function-alias 'mu4e-icalendar-setup
   'gnus-icalendar-setup '"1.11.22")
 
+(make-obsolete-variable 'mu4e-icalendar-trash-after-reply
+                        "Not functional after composer changes"
+                        "1.12.5")
 ;; mu4e.
 (define-obsolete-function-alias 'mu4e-clear-caches #'ignore "1.11.15")
 
diff --git a/mu4e/mu4e-server.el b/mu4e/mu4e-server.el
index a280f098..85f4050e 100644
--- a/mu4e/mu4e-server.el
+++ b/mu4e/mu4e-server.el
@@ -1,6 +1,6 @@
 ;;; mu4e-server.el --- Control mu server from mu4e -*- lexical-binding: t -*-
 
-;; Copyright (C) 2011-2023 Dirk-Jan C. Binnema
+;; Copyright (C) 2011-2024 Dirk-Jan C. Binnema
 
 ;; Author: Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
 ;; Maintainer: Dirk-Jan C. Binnema <djcb@djcbsoftware.nl>
@@ -117,11 +117,6 @@ See `mu4e--server-filter' for the format.")
 This happens when some message has been deleted. The function is
 passed the docid of the removed message.")
 
-(defvar mu4e-sent-func  nil
-  "Function called for each :sent sexp received.
-This happens when some message has been sent. The function is
-passed the docid and the draft-path of the sent message.")
-
 (defvar mu4e-view-func  nil
   "Function called for each single-message sexp.
 The function is passed a message sexp as argument. See
@@ -358,12 +353,6 @@ The server output is as follows:
          ((plist-get sexp :erase)
           (funcall mu4e-erase-func))
 
-         ;; receive a :sent message
-         ((plist-get sexp :sent)
-          (funcall mu4e-sent-func
-                   (plist-get sexp :docid)
-                   (plist-get sexp :path)))
-
          ;; received a pong message
          ((plist-get sexp :pong)
           (setq mu4e--server-props (plist-get sexp :props))
diff --git a/mu4e/mu4e.el b/mu4e/mu4e.el
index d202a3ce..8efc7b68 100644
--- a/mu4e/mu4e.el
+++ b/mu4e/mu4e.el
@@ -253,8 +253,6 @@ chance."
   (mu4e-setq-if-nil mu4e-headers-append-func   #'mu4e~headers-append-handler)
   (mu4e-setq-if-nil mu4e-found-func            #'mu4e~headers-found-handler)
   (mu4e-setq-if-nil mu4e-erase-func            #'mu4e~headers-clear)
-
-  (mu4e-setq-if-nil mu4e-sent-func             #'mu4e--default-handler)
   (mu4e-setq-if-nil mu4e-contacts-func         #'mu4e--update-contacts)
   (mu4e-setq-if-nil mu4e-info-func             #'mu4e--info-handler)
   (mu4e-setq-if-nil mu4e-pong-func             #'mu4e--default-handler)