diff --git a/imap-send.c b/imap-send.c
index b2d0b849bb..b5e332420a 100644
--- a/imap-send.c
+++ b/imap-send.c
@@ -1490,7 +1490,7 @@ static int curl_append_msgs_to_imap(struct imap_server_conf *server,
 	curl_easy_cleanup(curl);
 	curl_global_cleanup();
 
-	return 0;
+	return res != CURLE_OK;
 }
 #endif