How to track speed of email sending?


Active Member
I send a high volume of emails using MailWizz. I have Redis queue setup. It used to take 2-3 hours to send around 500,000 emails. Now, out of the blue, it is taking 12-15 hours. I'm not sure why.

Is there any debugging function of MailWizz which allows me to get reports to what has delayed the sending of these emails? I want to know what is causing the delay to see if I can speed it up.