Hey, got a question for you...
It's all good being able to send 20 million a day - will any of it inbox though?
Have tried MTA/MailWizz setup before and despite being 10/10 on mail-tester with all settings PASS on Gmail, cleaned list, spintax-ed every word of the copy with green for no spam triggers on multiple websites, bounce rate (<0.15%) and Unsub rate (<0.08%) and very very slowly ramping up send volume (100/day) - within days, ended up getting sent to Spam from Gmail and outright blocked on Outlook (despite never having even sent anything to Outlook!)