The notification when turn off does drastically speed up the submission.
I am currently using easy WP SMTP to send – does it matter if I were to use Post SMTP or easy WP SMTP? Asking this as I currently only have 1 sever which i can tap in.
Alternatively, is there a setting where I can configure for the submission to be sent in the background and allow the users to continue with their browsing.. (alittle bit like the ‘outbox concept’)