Proofy - Quickly validate and verify your email lists.

Intelius - Intelius is a standout amongst the most surely understood online pursuits to use in discovering everything there is to think about a man.

Trumail - Free email verification API

Unlimited Criminal Checks - Unlimited Criminal Checks is a criminal records database that provides you with instant access to unlimited criminal check reports.

Email List Verify - The Fastest Way to Improve Email List Deliverability and ROI

eVerify - eVerify is a web-based software that legitimates employers to confirm the eligibility of their employees.