This is actually a really hard problem to solve. At my company we have been working with several social data enrichment providers and even the "best" have a pretty high degree of error.

For what it's worth we just typed in a few "lesser-known" emails/twitter handles and it picked up relevant and accurate data.

I'm going to signup for an API key and fill out the contact form so we can talk to you guys. Is there any plan to support Instagram handles? Twitter seems to be the network of choice among services like these but I would argue Instagram data is much more valuable, especially when it comes to influencer marketing.