Hi - this support subject seemed to go dead https://premium.wpmudev.org/forums/topic/why-has-cron-stipend-sending-email-with-enewsletter#post-621598 but the problem still exits - in fact it is worse now.
Since the previous support request, I have been unable to send newsletters out directly either. I can send a preview email from the newsletter design page, but when I try to send it for real it seems to send, but disappears into the ether! the emails are not received.
There must be a way to clear the cron queue to solve the first problem I am having. I have tried de-activating and deleting the plugin, but when I restore it all of my data is still there, including 3,500 emails in the cron queue.
I have tested my outgoing email settings and all seems fine. I have checked the outstanding cron tasks on the server and there are none - it is only in Wordpress that this queue exists.
Please help - this is quite critical functionality for us.