Kickbox vs QuickEmailVerification (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 QuickEmailVerification if

• Fits if you clean small lists and can spread them over days
• Works for people who use ActiveCampaign, Brevo or GetResponse

Look elsewhere if

• Tight if you have one big list, as free is 100 credits a day
• Watch out: the pricing page ran a sale with no end date, so the regular prices may change
• Watch out: a daily-credit subscription exists, and its top step is $900 a month
• Watch out: there is only a web dashboard and API, no apps

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.

QuickEmailVerification

• The free tier gives 100 credits a day; there is no larger free monthly bucket.
• The pricing page was running a limited-time sale with no end date shown; the prices listed here are the regular ones.
• A Per Day Credits monthly subscription (100 to 50,000 credits a day) also exists; only its $900 a month top step was readable, so it is not listed as a plan.
• Web dashboard and API only; no desktop or mobile app is listed.

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.

QuickEmailVerification

Bulk list verification

Drag and drop a list for cleaning, then download the results.

Real-time API

A REST API for checking addresses as they are entered, to keep fake sign-ups out of a database.

Marketing platform integrations

More than 50 integrations listed, including ActiveCampaign, AWeber, Brevo, Constant Contact, Campaign Monitor, Drip and GetResponse.

Free tools

The site offers free tools alongside the paid credits, and a free tier of 100 credits a day for testing.

Security and compliance claims

The vendor says it is ISO 27001 certified and GDPR, CCPA and HIPAA compliant.

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.

QuickEmailVerification

• Free$0

  100 credits a day that reset daily.

• Persistent Credits$4

  one-time, for 500 credits used as you go

  Credits never expire. The calculator lists $8 for 1,000, $60 for 10,000 and $320 for 100,000, before a sale discount of 10% to 15% at the larger sizes.

Kickbox

• Nonprofit

  15% off for nonprofits

  Kickbox gives nonprofit organizations a 15% discount on verification.

QuickEmailVerification

No public discounts listed.