diff --git a/src/imap/cmd-expunge.c b/src/imap/cmd-expunge.c
index 336be6174b..06589facbe 100644
--- a/src/imap/cmd-expunge.c
+++ b/src/imap/cmd-expunge.c
@@ -5,20 +5,6 @@
 #include "imap-search-args.h"
 #include "imap-expunge.h"
 
-static bool cmd_expunge_callback(struct client_command_context *cmd)
-{
-	if (cmd->client->sync_seen_deletes && !cmd->uid) {
-		/* Outlook workaround: session 1 set \Deleted flag and
-		   session 2 tried to expunge without having seen it yet.
-		   expunge again. MAILBOX_TRANSACTION_FLAG_REFRESH should
-		   have caught this already if index files are used. */
-		return cmd_expunge(cmd);
-	}
-
-	client_send_tagline(cmd, "OK Expunge completed.");
-	return TRUE;
-}
-
 static bool ATTR_NULL(2)
 cmd_expunge_finish(struct client_command_context *cmd,
 		   struct mail_search_args *search_args)
@@ -45,14 +31,8 @@ cmd_expunge_finish(struct client_command_context *cmd,
 	}
 
 	client->sync_seen_deletes = FALSE;
-	if ((client->enabled_features & MAILBOX_FEATURE_QRESYNC) != 0) {
-		return cmd_sync(cmd, MAILBOX_SYNC_FLAG_EXPUNGE,
-				IMAP_SYNC_FLAG_SAFE, "OK Expunge completed.");
-	} else {
-		return cmd_sync_callback(cmd, MAILBOX_SYNC_FLAG_EXPUNGE,
-					 IMAP_SYNC_FLAG_SAFE,
-					 cmd_expunge_callback);
-	}
+	return cmd_sync(cmd, MAILBOX_SYNC_FLAG_EXPUNGE,
+			IMAP_SYNC_FLAG_SAFE, "OK Expunge completed.");
 }
 
 bool cmd_uid_expunge(struct client_command_context *cmd)