Kickbox vs ZeroBounce
We give Kickbox and ZeroBounce the same GPA: 2.4 out of 4.0. Kickbox grades higher on value for money. ZeroBounce grades higher on features. They get the same grade on the free plan, ease of use and platforms.
Price, platforms and features side by side. The table says where each price was read and when.
Kickbox
Pay-as-you-go email verification with an optional threat score
ZeroBounce
Email list verification with warm-up and DMARC monitoring in one plan
How we grade them
| 2.4GPAKickboxFair | 2.4GPAZeroBounceFair | |
|---|---|---|
| Value for money | C$70 for a one-off pack of 10,000. Among its listed rivals only ZeroBounce (about $129) costs more; NeverBounce is $50, Bouncer and Emailable $60 and DeBounce $25. Unknown results are refunded, and Threat Score costs one more credit only when it finds something. | DAbout $129 for a one-off pack of 10,000 checks, or $79 a month billed yearly on ONE for 10,000 credits a month with warm-up and DMARC thrown in. Its listed rivals charge $39 to $70 for 10,000, so even ONE is the dearest way to check a list. |
| Free plan and trial | CNo free plan, but the first 100 checks are free. Enough to see what the results look like, not to clean a real list. | CA real free plan: 100 checks a month that refill, plus one inbox test, one server test and one blacklist monitor. You need a business email to get it, and 100 checks won't clean a list. |
| Features | CIt does the checking job fully: bulk lists, a real-time API with a sandbox, a free check for disposable domains and an optional Threat Score. That's a smaller job, though: no warm-up, placement tests or DMARC tools. | BThe one list cleaner here that touches all three jobs: validation with spam-trap and abuse flags, AI scoring and an email finder, then on ONE, warm-up seeds, 100 inbox tests, blacklist monitors and DMARC reports. DMARC covers just one domain, though. |
| Ease of use | BNo App Store rating on record, but nothing to set up: upload a list and it comes back sorted by deliverability. Kickbox says 100,000 addresses take about an hour. | BNo App Store rating on record. The core job needs nothing set up: upload a list and download it cleaned. There's an iPhone and iPad app for checking lists away from your desk, too. |
| Platforms and integrations | BWeb and an API, with Mailchimp, Klaviyo, HubSpot, Braze, Iterable, SendGrid and Salesforce, and more through Zapier. No phone or desktop app. | BWeb and an iOS app, an API with SDKs in 16 languages and an MCP server, plus Mailchimp and Zapier. No Android or desktop app. |
| Best for | checking sign-ups as they happen | list cleaning with warm-up and DMARC on one bill |
The GPA is the average of the five grades: an A is 4 points, an F is none. The full reasons are on each tool's page: Kickbox and ZeroBounce. How we grade
Where they differ
- Kickbox starts at $5 one-time for 500 verifications. ZeroBounce starts at $39 one-time for 2,000 verification credits.
- ZeroBounce has a free plan. Kickbox does not, though it has a free trial.
- Only ZeroBounce lists an iOS app.
- ZeroBounce also covers inbox warm-up and dMARC.
At a glance
| Kickbox | ZeroBounce | |
|---|---|---|
| Pricing | Free trial | Free plan |
| Starts at | $5 one-time for 500 verifications | $39 one-time for 2,000 verification credits |
| Free plan | None | Freemium: 100 verification credits a month for sign-ups with a business email domain, plus 1 inbox test, 1 server test, 1 blacklist monitor and 10 Email Finder searches. No warm-up or DMARC. |
| Free trial | The first 100 verifications are free | None listed |
| Web | ||
| iOS | ||
| Made by | J2 Martech Corp | ZeroBounce |
| Price read from | kickbox.com | zerobounce.net |
| Checked | Oct 18, 2026 | Oct 18, 2026 |
Who each one suits
Kickbox
- Marketers who verify a list now and then without a subscription
- Developers adding real-time checks to a sign-up form
- Teams on Braze, Iterable or Klaviyo that want verification built in
ZeroBounce
- Marketers cleaning large lists before a campaign
- Developers checking sign-ups through an API
- Small senders who want verification, warm-up and DMARC on one bill
Worth knowing
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.
ZeroBounce
- Warm-up and DMARC monitoring come only with ZeroBounce ONE, and it covers a single DMARC domain.
- Unused tests, monitors, searches and warm-up seeds on ONE do not roll over; only verification credits do.
- The FAQ says credits never expire with an active ONE subscription; otherwise expiry rules may apply depending on when they were bought.
- The free credits need a business or premium email domain at sign-up.
Key features
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.
ZeroBounce
- Email validation
- Checks lists by file upload or real-time API and flags invalid, catch-all, disposable, role-based, abuse and spam-trap addresses. Unknown results and duplicates are free.
- AI scoring
- An AI model scores each address for quality at one extra credit, which helps decide whether to send to catch-all and other uncertain addresses.
- Email Finder
- Finds a person's work address from a name and company domain, at 20 credits per successful search; unknown results cost nothing.
- Warm-up and placement tests
- ZeroBounce ONE includes warm-up through a seed network, inbox placement tests against 20+ providers and email server tests.
- Blacklist and DMARC monitoring
- Monitors IPs and domains on blacklists and gathers daily DMARC reports for one domain on the ONE plan.
- API, SDKs and iOS app
- A validation and scoring API with SDKs in 16 languages, an MCP server, and an iOS app for checking lists from an iPhone or iPad.
Plans
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.
ZeroBounce
Freemium$0
100 verification credits that refill each month, one inbox placement test, one server test and one blacklist monitor.
Pay-As-You-Go$39
one-time for 2,000 credits
The minimum purchase. Per-credit rates fall with volume: about $129 for 10,000 ($0.0129 each) and $0.0032 each at 1 million.
ZeroBounce ONE$79
per month for 10,000 credits, billed annually ($99 monthly)
Credits roll over, plus 250 warm-up seeds, 100 inbox tests, 100 server tests, 10 blacklist monitors, 1 DMARC domain and 15% off extra credits.
EnterpriseCustom
Purchases or subscriptions of more than 1 million credits, with onboarding and training.
Ways to pay less
Kickbox
- Nonprofit
15% off for nonprofits
Kickbox gives nonprofit organizations a 15% discount on verification.
ZeroBounce
- Annual discount
20% off ZeroBounce ONE billed annually
ZeroBounce ONE costs $79 a month when paid annually in one charge, against $99 billed monthly.
