I've 16000 email in my Excel file and i've to checkout all email's domain. Is that domain valid or not. if i check all email's domain one by one it will take 2-4 days to check them. is here any option to checkout which email is valid and which email is not valid Thankyou Regard Devprakash
The second flor's advice is good, you don't want to work and don't want to use software, you are lazy to be honest, lol