Email Hippo vs Kickbox (2026): which should you pick?

Pick Email Hippo if

• Fits if you clean a list now and then and want a small pay-as-you-go pack
• Works for teams that want fraud and risk signals on sign-ups

Look elsewhere if

• Skip it if you want real-time checks on CORE, since they need a MORE, INSIGHT or ASSESS subscription
• Tight if you stay free, as it is 100 checks once
• Watch out: the starting price of $9.88 is for 1,000 checks and the billing basis is not stated
• Watch out: a minimum transaction fee applies to pay-as-you-go
• Watch out: above 2.5 million checks a month you need a quote

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

Email Hippo

• Prices are shown as a starting figure for 1,000 checks; the pricing calculator loads by script and the billing basis of the starting figure was not stated.
• CORE does not offer real-time checks; real-time use needs a MORE, INSIGHT or ASSESS API subscription.
• A minimum transaction fee applies to pay-as-you-go purchases.
• Enterprise quotes are required above 2.5 million checks a month, and above 1 million for ASSESS.

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.

Email Hippo

Bulk file verification (CORE)

Upload a CSV of up to 500,000 emails and pay only for unique addresses; duplicates are not charged.

Real-time validation (MORE)

An API that the page rates at about 430 ms average response and up to 250 requests per second.

Email intelligence (INSIGHT)

Adds a gibberish check, subaddressing detection, dark web checks and a marketing trust score.

Fraud assessment (ASSESS)

Adds a risk score, domain reputation and age, IP and location analysis, Tor exit node checks and blocklist detection.

WHOIS API

A separate product for domain age, ownership and registrar data.

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.

Email Hippo

• CORE$9.88

  per month and up, for 1,000 checks; billing basis not stated

  Bulk CSV list cleaning on a monthly, quarterly or annual subscription, or pay as you go (1,000 checks is about $9.88). Up to 500,000 emails per file.

• MORE$9.88

  per month and up, for 1,000 checks; billing basis not stated

  Real-time API for sign-up validation: DNS, MX and SMTP checks plus disposable, role, freemail and catch-all detection. Volumes run from 1,000 to 2,500,000 a month.

• INSIGHT$12.26

  per month and up, for 1,000 checks; billing basis not stated

  Everything in MORE plus enrichment such as a marketing trust score, dark web checks and consumer or business identification.

• ASSESS$14.63

  per month and up, for 1,000 checks; billing basis not stated

  Everything in INSIGHT plus fraud signals such as a risk score, domain age, IP and location analysis. Online volumes run to 1,000,000 a month.

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.

Email Hippo

No public discounts listed.

Kickbox

• Nonprofit

  15% off for nonprofits

  Kickbox gives nonprofit organizations a 15% discount on verification.