in Treeview of invoices i can send multiple emails at once by selecting multiple invoices.

they will be sent immediately.

how can i use the internal mail queue for such actions? we already tried to change composition_mode to mass_post ghrough send_and_print_action (overwriting some functions).

but then no mail.mail record will be generated so process_email_queue() does not find any mails to send from queue.

what is the correct way to achieve this?

we also tried overwriting mail.message create Method and set mail_notify_force_send = False