When an order is placed and payed, usually all emails are sent (confirmation to the customer and bcc to addresses specified in configuration.. 'Send Order Email Copy To' ) but I have two cases in wich the email is not sent. All is configured correctly and usually running properly, no logs related in the system log, debug.log or exception.log.
Where I can find info about this failure? Are there any table in the db to check?
The only information I have found is in sales_order where fields email_sent and send_email are both null, usually = 1.
Why send_email is null?
I cannot find any checkbox during the ceckout process to not receive the order email confirmation.
In Magento 1.9 there was the table core_email_queue. In Magento 2?