Business Emails, Searching and Extracting

What is the quickest way of extracting business emails???

Ive been given the task of scraping only business emails (no personal emails so no spammin ) to build a huge list for a client.

My current method is to use scrapebox to find the all the URLs on the specific keyword then use the grab email function.
This method is working but has some drawbacks.
Its a slow process and there is no way of confirming if they a defo business emails.

Has anyone got a quicker method? Would be scraping yell.com be more beneficial for this?

Please Help

any more? im very interesting to do this in Spain. ore technics?

Have you tried searching Google for "yellow page scraper" or something similar. These tools are designed specifically to grab that info from the online yellow pages sites which practically guarantees they are business emails.

They also extract the websites from yellow page listings so at the very least you use a yellowpage scraper to get the business websites and then you put those urls in scrapebox to get the emails. At least then you would know the sites are business sites.