Mike R. basically explains our process, verify first thru million verifier (most cost efficient) then run all riskies to findymail. On average we see 40-50% of those riskies are actually valid, thats huge!
But also, controversial take: all email verifiers essentially are the same thing. Now, I understand some are a little bit better than others, but they all do the same thing. It's more important to just pick one and just go. But yeah, usually Millionverifier is reliable and it's the cheapest. And Findymail is more expensive, but we only use it for riskies.
