Kickbox vs Webbula (2026): which should you pick?

Pick Kickbox if

• Fits if you check sign-ups in real time and want a sandbox to test against
• Works for teams on Braze, Iterable or Klaviyo who want checks built in

Look elsewhere if

• Pricey if you clean big lists, as a million checks cost $2,999
• Not for you if you need warm-up, placement tests or DMARC tools as well
• Watch out: Threat Score costs one more credit when it finds a signal, which can double the price of an address
• Tight if you want a monthly plan, as only one-off packs are listed
• Tight if you want to try it on a real list, as only the first 100 checks are free

Pick Webbula if

• Fits if you want threat scans alongside address checks
• Works for small teams on a fixed monthly credit pack

Look elsewhere if

• Watch out: On Demand and add-on credit rates sit behind a slider and weren't read
• Skip it if you want a free plan, as it's only 100 sign-up credits
• Skip it if you want apps or integrations, as none are listed
• Watch out: enterprise needs go through sales rather than listed plans

Kickbox

• Only pay-as-you-go packs are listed; there is no monthly plan on the pricing page.
• Kickbox verifies addresses only; it has no warm-up, inbox placement testing or DMARC tools.
• Threat Score can double the cost per address when it finds a signal.

Webbula

• Per-credit rates for On Demand and add-on credits sit behind a slider and were not read.
• Enterprise needs are handled through sales rather than listed plans.
• Webbula also sells data appends and audience segments that are separate from Zuvo.
• No mobile or desktop apps are listed; use is through the web platform and API.

Kickbox

List verification

Upload a list and Kickbox sorts each address by deliverability; the vendor says 100,000 addresses take about an hour.

Verification API

Checks addresses at sign-up in real time, with a sandbox mode for testing without spending credits and a free endpoint for spotting disposable domains.

Threat Score

Flags addresses linked to abuse, complaints or a poor sending reputation, for one extra credit only when a threat signal is found.

Native integrations

Verifies lists inside Mailchimp, Klaviyo, HubSpot, Braze, Iterable, SendGrid and others, with more through Zapier.

Deliverability consulting

Deliverability audits and consulting from Kickbox's own team are offered as a separate service beside verification.

Webbula

Four Protect scans

Threat Detection plus Verification, Threat Detection only, Verification only, and Lead Validation, all on both plans.

Email verification

Checks format, syntax, domain, MX records and mailbox signals, and sorts addresses into valid, invalid, risky, catch-all or unknown.

Threat detection

The Core plan page cites more than 50 threat detection methods, with results grouped by risk category.

Bulk, batch or API

Verification is delivered by bulk processing, batch verification or API integration.

Team tools

On Demand includes member invitations, auto-replenishment rules and detailed usage reports.

Kickbox

• Pay as you go$5

  one-time for 500 verifications

  Larger packs cost less per check: $10 for 1,000, $70 for 10,000, $500 for 100,000 and $2,999 for 1 million. Unknown results are refunded.

• CustomCustom

  Volume pricing for more than 1 million verifications, through sales.

Webbula

• On DemandCustom

  No monthly charge; credits bought as needed at volume-based rates. The per-credit rates were not readable in the page text.

• Core$24.95

  per month for 2,500 credits

  Unused credits roll over month to month, and extra credits cost 10% less than On Demand rates.

Kickbox

• Nonprofit

  15% off for nonprofits

  Kickbox gives nonprofit organizations a 15% discount on verification.

Webbula

No public discounts listed.