I found emailaddresses.com through a search engine, but it wasn't google!
(I didn't even know about google back then).
I was searching for "free email". It was several years ago. I don't remember exactly when. I returned several times to find new free email accounts. Eventually last year I noticed that fastmail.fm was recommended, so I tried it.
Although I visited EMD several times to find info about free email, to the forums I got through the FastMail support links!