Hi there, Hopefully in the right place - apologies if not. I have a large list of e-mails (250,000 or so) that should be OK for marketing purposes, but I would like to go through an extra step just to make sure... What I would like to (hopefully) do is scan the .csv file to see how many of the e-mail addresses are publicly discoverable via search engines. Then hopefully end up with an extra column in the .csv with a Yes/ No filter. Does anyone know of any ways that this could be achieved? Obviously avoiding the manual approach would be nice! Many thanks in advance.