Kickbox vs MillionVerifier
From 10,000 addresses up MillionVerifier costs much less: $39 against $70 for 10,000, $149 against $500 for 100,000 and $449 against $2,999 for 1,000,000. Below 10,000 Kickbox is the one that sells small amounts, from $5 for 500, while MillionVerifier's smallest pack is 10,000 credits. MillionVerifier's credits never expire; Kickbox's terms say its credits expire a year after purchase. Kickbox's case is its deliverability tooling and advice.
Prices read from kickbox.com and millionverifier.com. We sell a competing product, and it is not in the verdict above — where we fit is at the bottom.
| Kickbox | MillionVerifier | |
|---|---|---|
| Cheapest route | $3.00–$10.00/1k | $0.17–$3.90/1k |
| Per year, if subscribed | — | — |
| Metering | Per-email fees, bought as credit packs | Pay as you go from 10,000 credits, credits never expire |
| Credits expire | Yes | No |
| Product type | Verifier | Verifier |
| Price checked | 2026-11-03 | 2026-11-02 |
Cost for one pass over a list
Each vendor’s cheapest available route. An empty cell means that vendor does not publish an allowance we can calculate from, not that it is free.
| List size | Kickbox | MillionVerifier | Cheaper |
|---|---|---|---|
| 1,000 | $10.00 | $39.00 | Kickbox |
| 10,000 | $70.00 | $39.00 | MillionVerifier |
| 50,000 | $275.00 | $89.00 | MillionVerifier |
| 100,000 | $500.00 | $149.00 | MillionVerifier |
| 1,000,000 | $2999.00 | $449.00 | MillionVerifier |
Cost at a steady monthly volume
What the same volume costs every month, on each vendor’s cheapest route that covers it in one month: a subscription tier whose allowance fits, or buying the covering pack again.
| Per month | Kickbox | MillionVerifier |
|---|---|---|
| 10,000 | $70.00Pay as you go: 10,000-credit pack at $7.00 per 1,000 | $39.00Pay as you go: 10,000-credit pack at $3.90 per 1,000 |
| 50,000 | $275.00Pay as you go: 50,000-credit pack at $5.50 per 1,000 | $89.00Pay as you go: 50,000-credit pack at $1.78 per 1,000 |
| 100,000 | $500.00Pay as you go: 100,000-credit pack at $5.00 per 1,000 | $149.00Pay as you go: 100,000-credit pack at $1.49 per 1,000 |
| 1,000,000 | $2999.00Pay as you go: 1,000,000-credit pack at $3.00 per 1,000 | $449.00Pay as you go: 1,000,000-credit pack at $0.45 per 1,000 |
How each one bills you
Kickbox charges $10.00 per 1,000 on a 500 pack, falling to $3.00 at 1,000,000, pay as you go with no subscription, metered as per-email fees, bought as credit packs. MillionVerifier charges $3.90 per 1,000 on a 10,000 pack, falling to $0.17 at 50,000,000, pay as you go with no subscription, metered as pay as you go from 10,000 credits, credits never expire.
Kickbox's purchased credits carry a limited validity. MillionVerifier says its pay-as-you-go credits never expire. For uneven volume, expiry often matters more than the headline price, because credits that lapse raise the real cost of every address you did verify.
What to watch with Kickbox: verification is billed per email, so cleaning a large list is a variable cost you cannot forecast from the plan price. With MillionVerifier: every pass is a fresh purchase, so a list you re-check monthly is bought again each time.
Both meter verifications, so checking the same list again costs again. Before committing to either, verify an address you invented at a real domain and an address at a catch-all domain on both. The first should come back invalid and the second as risky or accept-all, not valid.
Choose Kickbox if
you verify a few hundred or a few thousand addresses at a time, or want deliverability advice from the vendor that checks your list.
Choose MillionVerifier if
you clean lists of 10,000 or more and want the lower per-address price with credits that never expire.
Disclosure — our product
Where SimpleVerifier fits, and where it does not
We publish this comparison and we sell a third option, so treat the rest of this section as the pitch it is. SimpleVerifier is a monthly price with no per-email fees: verification is never cut off (each plan sets how many a month run at full speed) and API calls are included each month, so there are no credits to buy or expire:
Pro $39/mo
Email verification with the first 100,000 checks a month at full speed, then slower, never cut off, plus the finder and the API.
Pro + Phone $49.99/mo
Pro with the phone add-on: live carrier lookups for your phone lists.
Business $99/mo
For senders with big lists: the first 300,000 checks a month at full speed, then slower, never cut off.
Agency $249/mo
For agencies running lists for clients: the first 750,000 checks a month at full speed, then slower, never cut off.
That is worth it in two cases: large lists, because volume does not change the price, and lists you verify repeatedly, because a confirmed result is cached for 14 days so the second pass costs nothing. Outside those two cases, a metered vendor is usually cheaper and you should use one, Kickbox and MillionVerifier included.
Run the same test on any verifier
Type any address. It gets the same check the paid plans run: syntax, the domain’s mail servers and, where the provider allows it, a live mailbox check. Nothing is sent to the address.
Five checks a minute, no account needed. Nothing is sent to the address — we ask its mail server whether the mailbox exists, then disconnect.
Have a list? Sign in with Google and the first 100 addresses are checked free, with results to download. No card.
By continuing you agree to our Terms and Privacy Policy.
Common questions
- Kickbox or MillionVerifier — which is better?
- From 10,000 addresses up MillionVerifier costs much less: $39 against $70 for 10,000, $149 against $500 for 100,000 and $449 against $2,999 for 1,000,000. Below 10,000 Kickbox is the one that sells small amounts, from $5 for 500, while MillionVerifier's smallest pack is 10,000 credits. MillionVerifier's credits never expire; Kickbox's terms say its credits expire a year after purchase. Kickbox's case is its deliverability tooling and advice.
- How much do Kickbox and MillionVerifier cost?
- Kickbox costs $10.00 per 1,000 on a 500 pack, falling to $3.00 at 1,000,000, pay as you go with no subscription. MillionVerifier costs $3.90 per 1,000 on a 10,000 pack, falling to $0.17 at 50,000,000, pay as you go with no subscription. Both read from their own pricing pages — Kickbox on 2026-11-03, MillionVerifier on 2026-11-02.
- Should I choose Kickbox?
- Choose Kickbox if you verify a few hundred or a few thousand addresses at a time, or want deliverability advice from the vendor that checks your list.
- Should I choose MillionVerifier?
- Choose MillionVerifier if you clean lists of 10,000 or more and want the lower per-address price with credits that never expire.
- Is there an alternative to both Kickbox and MillionVerifier?
- SimpleVerifier is a monthly plan rather than credits: Pro at $39, Business at $99 or Agency at $249 a month. Email verification is never cut off (on Pro the first 100,000 a month run at full speed, more on Business and Agency), and API calls are included each month. It suits large lists and lists you re-check often. For a small one-off clean, a metered vendor such as Kickbox or MillionVerifier can cost less.