I want to send Newsletters via magento 2.3 newsletter. But in newsletter queue , no start action available can anybody have a solution for this?. what should i do for resolve this? I didn't configure any extension for newsletters.
To manage the load on server, Magento sends it in queue via cron jobs. So there is no any start option. You simply need to schedule the start time and it will send it on specified time. For more details on Queue scheduling please refer https://docs.magento.com/user-guide/marketing/newsletter-queue.html
In case if its still not sending you need to debug a bit
Check if cronjob is scheduled correctly for your Magento instance. For more details please refer https://www.mageplaza.com/kb/how-to-configure-cronjob-schedule-tasks-magento-2.html
Check the timezone of your Magento instance.
Hope it was helpfull. Thanks