Collect Email Addresses Online

I need someone to go download all email addresses for all people on some websites. I will get a subscription of Hunter. If hunter doesn’t return any emails, you need to open up the URL, visit every page until you find a list of emails. When you find it, you need to copy each email and name one-by-one on an excel file (one excel file for all, not individual files for each). This includes about 10,000 websites, to be completed in 15-20 days.