How much does email verification cost?

Start with what 1,000 checks cost, read on each vendor's own pricing page in September 2026. EmailListVerify charges $5, Bouncer $8 and Kickbox $10. At 10,000 the spread widens: Reoon $11.90, EmailListVerify $27, Bouncer $60 and Kickbox $70. ZapBounce charges $5 for 1,000 and $25 for 10,000, with no plan and no minimum.

At a million addresses the price list matters more than any other factor. MillionVerifier lists $449, ZapBounce $949, Reoon $960, emailverify.io $1,015, Bouncer $2,000 and Kickbox $2,999, all read on the vendors' own pages in September 2026. Our million-address answer breaks that bill down row by row.

Price per thousand is the wrong comparison on its own. A cheap credit spent on an address the engine could not judge costs more per usable answer than a dearer one that is never spent that way. So ask each vendor which results it bills, and read which verifiers charge for unknowns before you compare stickers.

Expiry is where the industry divides. Kickbox credits expire one year from purchase and Hunter credits after 12 months. Bouncer, Emailable, MillionVerifier and EmailListVerify leave balances in place. If you clean a list a few times a year, an expiry clause can quietly raise your real price by a quarter.

Subscriptions suit steady volume, such as a signup form checking every new address. Pay-as-you-go suits list cleaning, which comes in bursts. A monthly plan only costs you extra when unused credits vanish at month end, so check whether they roll over.

ZapBounce sells both. Pay-as-you-go runs $5 for 1,000, $25 for 10,000, $89 for 50,000, $139 for 100,000, $549 for 500,000 and $949 for 1,000,000. Credits never expire, and neither unknowns nor duplicates use one. A monthly plan costs 15% less than the same credits pay-as-you-go, and unused credits roll over while the plan is active. You also get 100 free credits a month, with no card. The full table sits on the pricing page.

Say your export has 56,000 rows. After repeats are collapsed, 49,500 distinct addresses remain. Of those, 3,000 come back unknown. On our terms neither repeats nor unknowns use a credit, so the job spends 46,500. The 50,000 pack at $89 covers it, and the 3,500 credits left over never expire, so they'll still be there for next quarter's cleanup.

Run the same file under stricter terms. If every row were billed, you'd need 56,000 credits, which is past the 50,000 pack and into the next size up. On our own price list that's the 100,000 pack at $139. The file didn't change. Only the terms did, and the bill rose by more than half.

For scale, the low end of the older vendors' range is $0.004 an address. At that rate, 56,000 billed rows come to $224.

The number worth comparing is what you pay for each answer you can act on. Say a vendor charges $0.001 an address, bills for unknowns, and returns a fifth of your list as unknown. You paid for 10,000 checks and got 8,000 answers, so each usable answer cost $0.00125. The sticker price understated the real one by a quarter.

Set the bill next to what your email platform charges as well. Most platforms price by contact count, so dead addresses carry a monthly fee for as long as they sit there. A one-time cleanup often pays for itself within a few billing cycles on storage alone.

For very small needs, price shouldn't enter into it. If you check a handful of new contacts each week, a free monthly allowance covers you. Ours is 100 checks a month with no card. Spend your attention on how the vendor labels what it can't resolve, because that choice affects every list you'll ever run.