Had a massive carding attack yesterday and the Failed Payment Email has a huge backlog now. Host has suspended email on the account (they understand it wasn't us. the system suspends automatically when X amount of email punches thru per hour). Anyway, I need to clear out whatever is in the queue, if that's even a thing anymore in 2.3. In 1.x I was able to manage this type of thing via SQL, but don't know how 2.3 handles the email queue (if there even is such a thing in 2.3).
Thanks.
Steps to Configure the Payment Failed Emails
1. On the Admin Panel, Stores > Settings > Configurations.
2. On the left panel, under the Sales tab, click on the Checkout subtab.
3. Open the Payment Failed Emails section
+ Choose the store contact of the email as the receiver of the message in the Payment Failed Email Receiver field.
+ Choose the store contact of the email as the sender of the message in the Payment Failed Email Sender field.
+ Choose the desired email template that is sent to registered customers in the Payment Failed Template field.
+ To send the payment failed emails to many people at the same time, enter the email addresses in the Send Payment Failed Email Copy To field, and each one is separated by a comma.
+ Choose one of the sending email methods in the Payment Failed Copy Method:
+ BCC: Sends a “blind courtesy copy” by including the recipient in the header of the same email that is sent to the customer. The BCC recipient is not visible to the customer and he/she doesn’t know that a copy is sent to many addresses.
+ Separate Email: Send a copy email as a separate email.
4. Save Config to complete the Payment Failed Email configuration.