Could experienced people estimate what type of server specs you would need to send 300,000 emails a day (spread out over 24 hours). Right now I am using a dedicated server with SSD, 32 GB ram, but I suspect I could downgrade a lot and still be able to send this. I'm just not sure how much downgrade would be possible. Could I send this on a VPS? Or should I stick to a dedicated server? What type of specs? I know SSD is necessary because on a previous server the HDD access was the bottle neck and it couldn't send this many mails in a day.