+static gboolean msgs_already_deleted_from_server ( TnyList *headers,
+ const TnyFolderStore *src_folder);
+
+
+/*
+ * This function checks whether a TnyFolderStore is a pop account
+ */
+static gboolean
+remote_folder_is_pop (const TnyFolderStore *folder)
+{
+ const gchar *proto = NULL;
+ TnyAccount *account = NULL;
+
+ g_return_val_if_fail (TNY_IS_FOLDER_STORE(folder), FALSE);
+
+ if (TNY_IS_ACCOUNT (folder)) {
+ account = TNY_ACCOUNT(folder);
+ g_object_ref(account);
+ } else if (TNY_IS_FOLDER (folder)) {
+ account = tny_folder_get_account(TNY_FOLDER(folder));
+ }
+
+ proto = tny_account_get_proto(account);
+ g_object_unref (account);
+
+ return proto &&
+ (modest_protocol_info_get_transport_store_protocol (proto) == MODEST_PROTOCOL_STORE_POP);
+}
+
+/*
+ * This functions checks whether if a list of messages are already
+ * deleted from the server: that is, if the server is a POP account
+ * and all messages are already cached.
+ */
+static gboolean
+msgs_already_deleted_from_server (TnyList *headers, const TnyFolderStore *src_folder)
+{
+ g_return_val_if_fail (TNY_IS_FOLDER_STORE(src_folder), FALSE);
+ g_return_val_if_fail (TNY_IS_LIST(headers), FALSE);
+
+ gboolean src_is_pop = remote_folder_is_pop (src_folder);
+ gint uncached_msgs = header_list_count_uncached_msgs (headers);
+
+ return (src_is_pop && !uncached_msgs);
+}