Control when Invoice Emails are being sent

Currently the system only seems to send emails in batches hourly during a certain timeframe. It does not seem to send outside of office hours or on weekends. I prefer that to be configurable. Such if I create an invoice on the weekend I want it to send immediately after creation. If I had something go on and it took longer to create invoices than normal. I don’t want those invoices having to sit for day because I missed the email window. I should be able to configure it go 24/7. Or be able to see the queue and force all out immediately. Hourly is fine for most cases. But there are situations that I want all to be emailed immediately on creation in alternative payment. The sooner the emails go out the quicker we get paid.