It's an interesting idea, I'll say that much. A way to find email addresses associated with a certain domain is a pretty neat thing to have.<p>That said, isn't this a spam nightmare waiting to happen? I mean, if you give a spammer or two hundred access to this site, then all hell is gonna break loose (especially with popular websites that spammers and scumbags might want emails associated with).<p>And with your crawler taking email addresses from blogs, articles, comments and other such sources, it seems like this is a doxing tool just waiting to be used. It's not uncommon for people to post email addresses associated with those they don't like on a personal level, especially if they're in the middle of a large controversy (like say, the recent US elections).<p>I really hope you've figured out a way to avoid that side. And considered adding a way for sites to opt out (either on a domain level or an individual email address level).
So you have a tool to find emails, something that scammers and spammers may use, and the first thing you ask on your website is for my email address?! How trustful is that?
I disagree with the premise where time spent finding an email is wasted time. Personal control over the privacy of one's email is exactly what makes email valuable.<p>This is true for both sender and receiver because: Larger inbox load means less time/mental energy per message which in turn means lower value per message.<p>It's like the reverse of a network effect: the more users you have spamming people, the less valuable those emails become.
If you're relying on crawlers to build your database how do you plan on dealing with spam traps? I see you have a verification aspect to your service but from what detail you have provided it would be incapable of distinguishing legitimate from trap.<p>Their presence in your lists could ultimately render the service useless as users risk blacklisting by contacting such addresses.