Automated web searching of email addresses

Hello, I would like someone to create an script for me which automatically searches the web for a specific email address and confirms whether it can find the specific email address. I have approximately 5 million email addresses to search for so the solution will need to be able to batch blocks of data as it searches. The process will need to write any email addresses it finds into an output table. I would like to have the script handed over to me at the end of the process so I can run it myself in future.