Switching
A Kickbox alternative that splits the risky bucket
Kickbox files accept-all, disposable and role addresses together as risky. Here is what each becomes, what the migration involves, and where Kickbox still wins.
What Kickbox does better — read this before anything else
- — The clearest pricing anywhere in this category — thirteen rows from 500 verifications to a million, published, with no quote required.
- — They refund every inconclusive result: "If we can't provide a definitive result to you, we'll refund the credit." That is a more generous rule than ours and it is theirs, not ours.
- — Cheaper than us at high volume: $2,999 for a million verifications on their published table.
- — Deliverability consulting sold as a service, not a feature — their pricing page offers a booked deliverability check.
- — The Sendex score, a proprietary quality measure that goes further than exists or does not exist.
Choose Kickbox if: Verification is all you need, you buy in large one-off batches, and you want the price published before you talk to anyone. If any of that is load-bearing for your team, staying put is the right decision and we would rather you knew now.
Why people move
- 1
Kickbox’s own documentation states that "Accept All, Disposable, and Role addresses are classified as Risky". Those are three unrelated situations. A catch-all domain means the mailbox was never tested. A role account that accepts mail is a real mailbox that a team reads. A disposable address that accepts mail is a real mailbox nobody will read next week. One label cannot carry three instructions.
Kickbox — Understanding results: terminology, read 11 September 2026
- 2
Kickbox verifies; finding addresses is not in their published product list. Every address found here carries the page it was published on, the extraction method, and whether it is still on that page today.
Kickbox — Pricing, read 11 September 2026
- 3
Their free tier is 100 verifications listed in the price table. Ours is 100 credits every month, renewing — about 200 verifications a month at 0.5 credits each — with the API included.
Kickbox — Pricing, read 11 September 2026
- 4
And the rule where Kickbox is better, stated plainly. They refund every result they cannot make definitive. We do not charge for a retryable unknown, but we do charge for a catch-all, because the probe established a real fact about the domain. If you verify a lot of catch-all domains, that difference is money and it favours them.
Kickbox — Pricing, read 11 September 2026
Moving across
- 1
Export from Kickbox
Download the verified list from your list history. Keep the Sendex column if you use it — nothing here reproduces it, and you will want the old numbers for reference.
- 2
Create a free account
100 credits a month, renewing rather than a one-time grant, with the API and bulk included. No card.
- 3
Re-verify the risky bucket first
This is the migration worth doing. Upload only the addresses Kickbox called risky: each comes back as catch-all, or as a real mailbox with a disposable or role flag, or as undeliverable. The bucket usually splits three ways and each part has a different answer.
- 4
Upload and map the rest
Bulk is priced on unique addresses rather than rows, and the exact cost is shown before a credit is reserved.
- 5
Switch the API
A POST with a bearer key. Map four statuses onto three plus a reason — the table below is the whole of it.
The response mapping
A developer's real switching cost is the response shape, and nobody publishes this. Left-hand column read from Kickbox's own documentation on 11 September 2026; right-hand column from the engine contract.
| Kickbox result | VerifyInbox | Note |
|---|---|---|
deliverable | deliverable / mailbox_exists | The same finding |
undeliverable | undeliverable | With a specific reason — mailbox_not_found, no_mx, syntax_error |
risky — accept-all | unknown / catch_all | Charged. The mailbox was never tested; the 250 described the domain |
risky — disposable | The server’s own verdict, plus disposable: true | A classifier never changes the verdict. A burner mailbox that exists is deliverable |
risky — role | The server’s own verdict, plus roleAccount: true | Same rule. info@ at a real company is a real mailbox |
unknown | unknown with the transient reason | greylisted, ip_blocked, server_busy — retryable: true, and not charged |
What gets better
The risky bucket, split. Three answers instead of one label, each with the SMTP reply code and the reason behind it. The decision you make about a catch-all domain is not the decision you make about info@.
Finding as well as verifying. Domain search and an email finder, every result carrying the page it came from and whether it is still there.
A free tier that renews. 100 credits every month rather than once, with the API and bulk included, so continuous verification has a floor that does not run out.
What gets worse
- The Sendex score. There is no equivalent and we are not going to invent one.
- Their refund on every inconclusive result — we charge for catch-all and full mailboxes.
- Their price at the very top of the ladder: $2,999 for a million verifications, published.
- Deliverability consulting as a service.
Sources
Primary sources checked 11 September 2026. If something here is out of date, tell us and we will correct it.
Switching from Kickbox
What is the best Kickbox alternative?
For verification with catch-all, disposable and role kept apart, plus finding addresses with a citation on each, VerifyInbox covers it. For very large one-off batches Kickbox is cheaper at the top of their published table and refunds every inconclusive result, so for pure high-volume cleaning they remain a strong choice.
How do I export my data from Kickbox?
Download the verified list from your list history as CSV. Upload it here, map the email column, and your original columns come back alongside our verdicts. The Sendex column has no equivalent here, so keep the original file if you rely on it.
What happens to my risky addresses?
They split. Accept-all domains become unknown with the reason catch_all. Disposable and role addresses get the mail server’s own verdict with a flag attached, so one that accepts mail is deliverable and flagged rather than filed as risky. Some turn out to be undeliverable outright.
Is VerifyInbox cheaper than Kickbox?
At the entry end, a monthly plan with credits included is a different shape from prepaid packs, so compare on the pricing comparison page rather than on one number. At a million verifications Kickbox’s published price is lower than anything we quote publicly.
Try it before you move
100 credits every month, free and renewing, with the API and bulk included. Re-check a few hundred addresses you already have verdicts for.
Still deciding between the two? VerifyInbox vs Kickbox is the feature comparison, and every alternative is one table.