I use Apollo to find contact info for leads that I generate. I like how apollo will work over LinkedIn and any site period!
Verified email and social accounts saves a ton of time having to use an email checker.
I wish the user interface wasn't so small and cluttered. Working with a lot of leads makes the "working area" feel small and difficult.
Very usefull tool that allowed us to scale our outbound strategy from lead gen to sending.
Their product evolve very fast and they keep innovating.
Why not 5 stars?: Replying to emails from multiple domains is far from being optimized.