I am looking for a Bulk Email Verification tool - I was wondering if you have experience with some tools I'm looking at now.
Currently I'm exploring Neverbounce, ZeroBounce and MillionVerifier. I have a database of around 700k and need to run it through.
I have used zerobounce and it has worked for us. I have only ran a fraction of our database through it but it drastically increased the deliverability rate.