Prime Verifier vs Kickbox
An honest side-by-side: what each one costs at the same volumes, what each one charges you for, and where Kickbox is the better choice. Kickbox's figures are from its public pricing page on 5 October 2026.
- Catch-all and unknown are free
- Credits never expire
- Prices checked 5 October 2026
Price at the same volume
| Credits | Prime Verifier | Kickbox |
|---|---|---|
| 5,000 | $15 | $40 |
| 10,000 | $21.67 | $70 |
| 50,000 | $75 | $275 |
| 100,000 | $120 | $500 |
| 500,000 | $400 | $1,800 |
| 1,000,000 | $650 | $2,999 |
Pay-as-you-go, USD. Prime Verifier prices are live from our price list; Kickbox prices are from its pricing page on 5 October 2026, before any promotion. The cheaper price at each volume is highlighted.
What you pay for
| Prime Verifier | Kickbox | |
|---|---|---|
| Results not charged | Catch-all, unknown and error. Duplicates are checked and charged once. | Unknown results are free: its pricing page says it refunds the credit when it cannot give a definitive result. It does not list catch-all results as free. |
| Credit expiry | Never. | Its pricing page does not say whether credits expire. |
| Free to start | Free credits on sign-up, no card. | 100 free verifications. |
Where Kickbox is stronger
- Its pricing page states it is SOC 2 certified; we have not been through a SOC 2 audit.
- Smaller packs, from 500 verifications for $5, if you only ever check a few hundred addresses.
Where Prime Verifier fits better
- Lower pay-as-you-go prices at every volume compared below.
- Catch-all results are free as well as unknown ones: you pay only when the mailbox is confirmed.
- Credits never expire, stated plainly.
- A live mailbox check on every address, plus a catch-all probe whenever a server accepts it, over API, bulk upload and 13 native integrations.
Which should you pick?
Pick Kickbox if you need a SOC 2 certified vendor for procurement, or you only verify a few hundred addresses at a time.
Pick Prime Verifier if you verify thousands of addresses or more and want to pay much less, with catch-all and unknown results free.
Either way, test both on a sample of your own list before you commit: results vary with the domains in it.
Prime Verifier vs Kickbox: FAQ
Is Prime Verifier cheaper than Kickbox?
At every volume in the table above, yes, based on both companies' public pay-as-you-go prices on 5 October 2026.
Which results does Kickbox charge for?
Unknown results are free: its pricing page says it refunds the credit when it cannot give a definitive result. It does not list catch-all results as free.
Which results does Prime Verifier charge for?
Only definite answers: valid, invalid or disposable. Catch-all, unknown and error results are free, because none of them confirms the mailbox.
Do Kickbox credits expire?
Its pricing page does not say whether credits expire. Prime Verifier credits never expire.
How can I compare them on my own list?
Verify the same sample with both, ideally addresses whose fate you already know from past sends, and compare the results and what each one billed. Kickbox: 100 free verifications. Prime Verifier: free credits on sign-up, no card.
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Test Prime Verifier against Kickbox on your own list
Free credits on sign-up. No card. You only pay for definite answers.
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