Ultra Fast Email validation script

Hello coders, I am looking for a script (linux server) that will validate email lists and write the responses in a .CSV file. Ex: hello123@[login to view URL], 554 delivery error: dd This user doesn't have a byebye123@[login to view URL], 250 ok dirdel There are already solutions available (such as <[login to view URL]> ) however they aren't fast enough. The product in the link above can only verify 50,000 emails an hour; I would need something much faster, at least 2-3 times faster. I don't need a fancy UI, just something effective and fast. Thanks!