It delivers 4 messages then stops, I have to trigger the engine then it delivers 4 more. It stops after every 4 then doesn’t go further with out hitting the trigger button.
The newsletter delivery cron runs each 5 mins. The mails send in each run is controlled by setting Max Email per hour. SO if you have set 50 email per hour it will only send 4 emails each 5 mins. If you made it 100 then it will send 8. and so on.
The delivery engine problem should be solved by deactivate plugin and activate it again.
