Kickbox vs MillionVerifier

You're weighing a deliverability firm that also verifies against a verifier that sells on price. Kickbox lists $2,999 for a million checks, and its credits expire a year after purchase. MillionVerifier lists $449 for a million, and its credits never expire. So the real question is what Kickbox's extra cost buys you, and whether you'll use it.

	Kickbox	MillionVerifier
1,000,000 checks	$2,999	$449
Smaller packs	$10 for 1,000, $70 for 10,000, $500 for 100,000	$89 for 50,000; smaller tiers sit behind a control that didn't load
Free credits	100	100, no card
Credit expiry	One year from purchase	Never
Unknown results	Not charged	Refunded
Address score	Sendex quality score	Verdict per address
Billing model	Credit packs	Pay-as-you-go packs only
Accuracy claim	None published	99%+

Figures read from each vendor's own page in September 2026.

Where each one is stronger

What each vendor does that the other does not, stated as capability rather than advice.

Kickbox strengths

Kickbox publishes a full ladder, read on its site in September 2026: $5 for 500, $10 for 1,000, $70 for 10,000 and $500 for 100,000. You can price any job before you sign up. Each address also gets a Sendex score, which rates how good the address looks as a send, beyond valid or invalid. And Kickbox doesn't charge for results it can't settle. Kickbox runs as a deliverability consultancy, and verification is one of the services it sells.

MillionVerifier strengths

MillionVerifier sells on the big packs. It lists $89 for 50,000 and $449 for 1,000,000, read in September 2026, pay-as-you-go only, with no plan to keep alive. Its credits never expire, and the page says so twice. New accounts get 100 credits with no card. MillionVerifier also refunds any address it couldn't verify with certainty, so a messy file doesn't eat credits on rows that came back without an answer.

What separates Kickbox from MillionVerifier

Start with your yearly volume and the expiry clock. At a million checks, the list prices are $2,999 at Kickbox and $449 at MillionVerifier, both read in September 2026. Kickbox credits lapse a year after purchase. If you buy big to get the lower rate and then run half of it, the rest is gone. MillionVerifier credits stay on the account, so a big pack bought for a price break is safe to sit on.

Next, decide if you want a score or a verdict. Kickbox's Sendex score grades the address itself, which helps a team that segments sends by risk. MillionVerifier returns a verdict for each row and refunds the ones it couldn't settle. If your process is simple (keep the valid rows, drop the rest), you'll barely use a score. If you split sends into tiers, the score does real work.

Then read each accuracy line for what it measures. MillionVerifier states 99%+, and Kickbox publishes no accuracy figure. A vendor's rate counts correct calls among the rows it answered, so it leaves out the unknowns and catch-all addresses where the hard cases live. Test both on the same 1,000 of your own addresses and count the rows each leaves unresolved.

What Kickbox and MillionVerifier both run into

Vendor accuracy percentages in this category count how often a returned verdict was right. They are calculated after the catch-alls and the servers that refuse to answer have left the denominator. Hunter tested 15 verifiers on 3,000 real business addresses (3 November 2025) and measured 31.2% to 70.0% overall. Both kinds of figure are real and they are not measuring the same thing.

Questions about Kickbox and MillionVerifier

Is MillionVerifier cheaper than Kickbox?

At a million checks, yes. MillionVerifier lists $449 for 1,000,000 and Kickbox lists $2,999, both read on their own sites in September 2026. MillionVerifier's smaller tiers were not readable, so compare at 50,000 or above.

Do Kickbox credits expire?

Yes, Kickbox credits expire one year from purchase. MillionVerifier credits never expire, so a pack bought for a volume discount stays usable.

What is Kickbox's Sendex score?

Sendex is Kickbox's quality score for an address. It rates how good the address looks as a send, on top of the valid or invalid verdict, so you can split a list by risk.

Do Kickbox and MillionVerifier charge for unknown results?

No. Kickbox doesn't charge for results it can't settle, and MillionVerifier refunds any address it couldn't verify with certainty. Both policies were on their own sites in September 2026.

Add up the checks you'll run in the next 12 months. If Kickbox's one-year expiry would strand part of a pack, price the smaller packs instead. Compare Kickbox vs ZeroBounce, MillionVerifier vs ZeroBounce, the comparison hub and our own pricing.