My newsletters are not sent to all of my subscribers. I have 70,000 subscribers in my Magento database. After adding the template, then queuing the newsletter, schedule a date and time for it, it doesn't send out automatically at the scheduled date and time.
I have to login to admin and click "Send Newsletters", however when I do it only sends the newsletter to 40 each time. It's very long-winded to send to 70,000 subscribers like this!
I've looked at the settings and the Magento cron job is working fine, it just doesn't send to more than 40 subscribers.