VeriMails vs Kickbox

Kickbox Pricing and API Notes

The Kickbox pricing screenshot captured May 19, 2026 shows 10,000 verifications at $70 and 100,000 at $500, and the API reference shows a dedicated accept_all response field. If those extras matter to you, Kickbox belongs on the shortlist. If price per clean email matters more, VeriMails gives you the same core checks for less. Confirm current Kickbox checkout before purchase.

Kickbox Risk Policy Reference

Kickbox's risky-email policy is most useful when you are deciding which segments can enter primary campaigns and which should stay in review.

Pricing and Total Cost

Kickbox publishes a straightforward credit table. The table starts with 100 free verifications, then paid packs from $5 for 500 verifications through $2,999 for 1,000,000 verifications. Kickbox says volumes above 1 million should contact sales for custom pricing or volume discounts. The same pricing page says unknown verification results are refunded as credits.

Credit-pack costs at common volumes

Cost differences use the Kickbox pricing screenshot captured May 19, 2026 and the published VeriMails credit packs shown below.

Kickbox pricing tiers

Computed per-verification costs are arithmetic from the Kickbox prices captured May 19, 2026. Kickbox says accounts include volume discounts, first-class support, and a GDPR-compliant platform, and that unknown verification results are refunded as credits.

VeriMails credit pricing

VeriMails credits never expire. New accounts receive 100 free credits on signup.

API and Status Model

Kickbox's single verification API is well documented. The request uses GET https://api.kickbox.com/v2/verify with a required email address and API key, plus an optional timeout parameter that defaults to 6000 milliseconds and can be set as high as 30000 milliseconds. Kickbox also supports API authentication through an Authorization: Bearer header, documents an EU endpoint at api.eu.kickbox.com for EU-only accounts, and warns that verification endpoints do not allow browser-side cross-domain requests.

Catch-all and Risky Handling

Kickbox does handle catch-all domains directly. Kickbox defines accept-all or catch-all domains as domains that accept mail even when an address may be invalid. Kickbox warns that these domains can silently discard mail or bounce later, says delivery to a specific inbox cannot be guaranteed, and recommends caution because sending to accept-all domains may increase bounces or lower open rates.

Operationally, Kickbox groups Accept All with other Risky categories. The single verification API returns accept_all: true when an address was accepted but the domain appears to accept all mail. The risky bucket also includes disposable and role addresses. VeriMails keeps the comparison simpler for teams that mainly need list-cleaning policy: keep confirmed-valid addresses separate, segment catch-all addresses deliberately, and avoid mixing accept-all risk into high-reputation campaigns without a separate send policy.

Sendex Score

Sendex is Kickbox's email-quality score. Kickbox documents it as a value from 0, meaning no quality, to 1, meaning excellent quality. Kickbox says Sendex considers patterns associated with known high-quality addresses, whether a domain is commercial or free, and whether the address appears to be a role address. Kickbox also warns that Sendex should not be used alone when deciding whether to deliver a message.

These bands are from Kickbox's Sendex material. VeriMails focuses on verification and segmentation signals rather than a branded quality score.

Bulk Verification Workflow

Kickbox's batch verification API verifies up to 1 million email addresses asynchronously from one request. Applications start a batch job with PUT https://api.kickbox.com/v2/verify-batch, then use the returned job ID to check status. Kickbox documents four batch statuses: starting, processing, completed, and failed. Completed responses include deliverable, undeliverable, risky, unknown, Sendex, and address stats plus a download URL.

For teams that want a developer-owned batch workflow, Kickbox's callback and polling model is useful. For teams that mostly need straightforward CSV cleaning and low per-email cost, VeriMails is the narrower verification-first option.

Who Should Choose Which?

Run the Next Check in VeriMails

You have the pricing, credit rules, API behavior, and catch-all handling. Now Start Free and run a real sample from your own list before you pay for another verifier.

Verification Accuracy

Both VeriMails and Kickbox can help reduce bad addresses before a campaign. The difference is how clearly the result fits your next send: VeriMails keeps valid, invalid, disposable, role-based, catch-all, and unknown rows separate for decision-making.

Use a recent sample from your own CRM, not a perfect test list. The addresses that matter are the ones you plan to mail this week: old leads, imported contacts, role inboxes, catch-all domains, and records from mixed sources.

Who VeriMails Is Best For

Choose VeriMails when verification is the job and you want the result before the send.

• You already have a list and need to clean it before a campaign.
• You want prepaid verification credits that never expire.
• You need API and CSV verification without paying for a larger sales platform.

Source Checks Before You Buy

Kickbox pricing can require a live checkout check. Use the May 19, 2026 pricing screenshot as a dated benchmark, then confirm the live Kickbox checkout before you compare the same credit pack against VeriMails pricing.

• Kickbox pricing
• Kickbox API docs
• VeriMails pricing

Frequently Asked Questions