Compare/Head to head

BillionVerify vs Kickbox

Same facts, side by side: starting price, free tier, MCP, API and what each one is actually built for.

Starting price

BillionVerify

$20 Free tier

SMTP email verification with a free monthly allotment, hosted MCP, and REST API. Paid credits start at $20 for 20,000 one-time.

Where BillionVerify fits

  • Teams cleaning lists before cold email
  • Apps that need a real-time verification API
  • Buyers who want a hosted MCP for ChatGPT or Claude
  • High-volume jobs that can buy annual credit packs

Kickbox

$5/500 verifications Free tier

Email verification sold as pay-as-you-go packs, with 100 free checks to start. The smallest paid pack is $5 for 500 verifications.

Where Kickbox fits

  • Senders who want 100 free checks with no card
  • Small teams that start with a $5 pack
  • Developers verifying emails at signup via the API
  • Teams syncing lists from HubSpot or Mailchimp

At a glance

DetailBillionVerifyKickbox
Starting price$20$5/500 verifications
Free tier✓Yes✓Yes
MCP server✓Yes–No
Public API✓Yes✓Yes
Listed underVerificationVerification

Where they pull apart

BillionVerify

Stands out: Hosted MCP at mcp.billionverify.com plus bulk and real-time API on every paid path.

Watch out: New monthly subscriptions prepay three months at checkout. Unused metered credits do not roll like a cash balance. Catch-all still needs human judgment.

Not the right fit for

  • Buyers who refuse a three-month monthly prepay
  • Anyone needing phone or LinkedIn enrichment

Kickbox

Stands out: Unknown results are refunded as credits, so you do not pay for a check that returns no clear answer.

Watch out: Packs are paid upfront, not billed monthly. Very large volumes move to custom pricing through sales.

Not the right fit for

  • Buyers who want a flat monthly subscription
  • Teams that need lead search and verification together

Pros and cons

BillionVerify

  • 600 free credits a month, plus daily login bonus
  • Hosted MCP endpoint and REST API
  • One-time packs from $20 for 20k credits
  • Monthly plans prepay the first three months
  • No phone or company-enrichment product
  • Unused metered credits do not roll over

Kickbox

  • 100 free verifications, no card
  • Paid packs from $5 for 500
  • Unknown results refunded
  • Upfront packs, no monthly plan
  • Top volumes need a custom quote
  • Verification only, no lead finder

What each one costs

BillionVerify

$20

The free plan gives 20 credits every day you log in, up to 600 a month, with no card. One-time packs start at $20 for 20,000 credits ($0.001 an email) and never expire, with lower rates at higher volumes and on monthly or annual plans. Unknown results do not use a credit. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Kickbox

$5/500 verifications

Pay-as-you-go packs: 500 verifications for $5, 1,000 for $10 and 2,500 for $25, with larger packs up to 1 million and custom pricing above that. The first 100 verifications are free, and unknown results are refunded. Confirm current terms on the vendor site.

Checked 4 Nov 2026

Common questions

Is BillionVerify cheaper than Kickbox?
Kickbox starts lower, at $5/500 verifications against $20 for BillionVerify. That is the entry plan on each side, so the real number depends on seats and the tier you land on.
Can you try BillionVerify or Kickbox for free?
BillionVerify and Kickbox carry a free tier on our listing.
Does BillionVerify or Kickbox have an MCP server?
BillionVerify ships a first party MCP server, so an AI assistant can work the product directly.

Not the pair you wanted?

All BillionVerify alternatives All Kickbox alternatives Every Verification tool

Editorial listings, never paid rankings. Prices checked 4 Nov 2026. Confirm current terms on the vendor site. Spot an error?