Comparison
Hunter vs ValidReach
Hunter is an email finder that also verifies the addresses it reports. ValidReach only verifies: it takes addresses you already have and returns a status and flags. If you use a finder, you can still verify its output independently.
Different starting points
A finder answers "what is this person’s address?". A verifier answers "does this address accept mail?". If you already have the addresses, the second is all you need; if you do not, you need a finder first.
Test both on your own list
Take 200 addresses, check them with each, and compare the results row by row. Send a small batch from each group and compare bounces. We publish no accuracy comparison against any provider.