TL;DR
- At 100,000 emails Kickbox is $500. NeverBounce is $400, Emailable $420 and MailExchange $299.
- At 1,000,000 Kickbox is $2,999 and MailExchange is $1,699, 43% less.
- Kickbox has no monthly plan. MailExchange, Emailable and NeverBounce all offer one.
- Stay with Kickbox if you rely on its SOC 2 compliance or its native HubSpot or Salesforce integrations.
Price comparison (pay as you go)
| Service | 5,000 | 10,000 | 100,000 | 1,000,000 | vs Kickbox at 100K |
|---|---|---|---|---|---|
| Kickbox | $40 | $70 | $500 | $2,999 | n/a |
| MailExchange | $29 | $49 | $299 | $1,699 | 40% less |
| NeverBounce | $40 | $50 | $400 | $2,500 | 20% less |
| Emailable | $38 | $60 | $420 | $2,100 | 16% less |
| ZeroBounce | $69 | $129 | $649 | $3,199 | 30% more |
| BriteVerify (Validity) | No public pricing (sales call required) | ||||
From each vendor's own pricing page (Kickbox, NeverBounce, Emailable, ZeroBounce, Validity), checked 2026-10-17. Promotional codes not included.
Kickbox cut its prices in mid-2026, and the table uses the new ones. Even so, it costs more than MailExchange, Emailable and NeverBounce at 10,000 and up.
The terms side by side
| Service | Unknowns charged | Credits expire | Monthly plan | Free to start |
|---|---|---|---|---|
| Kickbox | No, refunded | Not stated | No | 100 verifications |
| MailExchange | No, refunded | Never | 15% off | 250 credits |
| NeverBounce | Not stated | 12 months after purchase | Growth plans | Free test credits (amount not stated) |
| Emailable | No, refunded | Never | 15% off | 250 credits |
| ZeroBounce | No | "Expiration rules may apply" outside its ONE plan | ZeroBounce ONE, from $99 | 100 a month |
| BriteVerify | Not stated publicly | Not stated publicly | Ask sales | Not stated publicly |
The alternatives, one by one
- MailExchange: the lowest price at every volume, unknowns refunded like Kickbox (plus free duplicates), credits that never expire, and a monthly plan at 15% off if you verify every month. Built around cold-email list cleaning. Native connectors are on the roadmap, so today it's CSV upload or the early-access API. MailExchange vs Kickbox.
- NeverBounce: cheaper than Kickbox from 10,000 up and owned by ZoomInfo, with 80+ integrations. Its pay-as-you-go credits expire after 12 months, but its monthly Growth plans are very cheap at high, steady volume. MailExchange vs NeverBounce.
- Emailable: slightly cheaper than Kickbox at every volume, refunds unknowns and duplicates, never expires credits, and has native HubSpot, Mailchimp, Klaviyo and Salesforce integrations. MailExchange vs Emailable.
- ZeroBounce: more expensive than Kickbox, but bundles an email finder, inbox placement tests and warmup. Worth it only if you'll use those. MailExchange vs ZeroBounce.
- BriteVerify (Validity): aimed at enterprise buyers, with pricing only through sales. MailExchange vs BriteVerify.
When to stay with Kickbox
If your security review requires SOC 2, or your team verifies inside HubSpot, Mailchimp, Klaviyo or Salesforce through Kickbox's native integrations, switching costs you more than the price gap saves. Kickbox's own pricing is also easy to understand: one price per pack, unknowns refunded.
Switching is easy
Verification has no lock-in. Export your list as CSV, upload it to MailExchange, and filter on the result column. Results come back as deliverable, risky, undeliverable or unknown, with catch-alls labelled on their own; read our catch-all guide before you decide whether to send to them.
Common questions
Which alternative is most like Kickbox? Emailable and MailExchange. Like Kickbox they refund unknowns and sell simple packs, and both add a 15% monthly discount and credits that never expire.
Is a cheaper verifier less accurate? Not necessarily. Price comes from cost and business model, not just quality. The only way to know is to run a sample of your own list through two services and compare the results.