ZeroBounce
the most complete result object of any verifier we tested
the best all-rounder — accurate, unusually transparent about catch-all and greylisted results, and the only one that consistently told us why an address failed.
zerobounce returns more per address than anyone else on this list: status, sub-status, whether the domain is catch-all, a free/role flag, an activity-data signal, and often a suggested spelling correction for obvious typos. in practice the sub-status field is what makes it worth the price — 'mailbox_not_found' and 'greylisted' are different problems, and every other tool collapses them into 'invalid' or 'unknown'.
the design intent is visible throughout: it would rather return an honest unknown than a confident guess, and it gives you the sub-status you need to decide what to do about it. that is the opposite of how the budget tools behave.
the description above is ours, condensed from the ranking. pricing moves — check it on the vendor's own page before you rely on it.
- category
- email verification tools
- pricing
- $0.0035 / verification at 100k
- website
- zerobounce.net
the best all-rounder — accurate, unusually transparent about catch-all and greylisted results, and the only one that consistently told us why an address failed.
we researched this category against vendors' own pricing pages and licence files. that is where this line comes from — not from the vendor, and not from anything they paid for.